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18393177696 = 2531910083979
BaseRepresentation
bin10001001000010100…
…011001111001100000
31202110212000020102120
4101020110121321200
5300132123141241
612241045344240
71220541300525
oct211024317140
952425006376
1018393177696
117889518703
123693a08080
1319718237ca
14c66b3714c
15729b70666
hex448519e60

18393177696 has 48 divisors (see below), whose sum is σ = 50823259200. Its totient is φ = 5808371328.

The previous prime is 18393177653. The next prime is 18393177701. The reversal of 18393177696 is 69677139381.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5040166 + ... + 5043813.

It is an arithmetic number, because the mean of its divisors is an integer number (1058817900).

Almost surely, 218393177696 is an apocalyptic number.

18393177696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18393177696 is an abundant number, since it is smaller than the sum of its proper divisors (32430081504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18393177696 is a wasteful number, since it uses less digits than its factorization.

18393177696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10084011 (or 10084003 counting only the distinct ones).

The product of its digits is 10287648, while the sum is 60.

The spelling of 18393177696 in words is "eighteen billion, three hundred ninety-three million, one hundred seventy-seven thousand, six hundred ninety-six".

Divisors: 1 2 3 4 6 8 12 16 19 24 32 38 48 57 76 96 114 152 228 304 456 608 912 1824 10083979 20167958 30251937 40335916 60503874 80671832 121007748 161343664 191595601 242015496 322687328 383191202 484030992 574786803 766382404 968061984 1149573606 1532764808 2299147212 3065529616 4598294424 6131059232 9196588848 18393177696