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18408293102 = 221757423043
BaseRepresentation
bin10001001001001110…
…000100001011101110
31202111220110011212102
4101021032010023232
5300200010334402
612242345335102
71221113624003
oct211116041356
952456404772
1018408293102
117897002081
123698a97492
1319749b6834
14c68b4d8aa
1572b159102
hex4493842ee

18408293102 has 8 divisors (see below), whose sum is σ = 27613774056. Its totient is φ = 9203701752.

The previous prime is 18408292963. The next prime is 18408293131. The reversal of 18408293102 is 20139280481.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168008 + ... + 255035.

It is an arithmetic number, because the mean of its divisors is an integer number (3451721757).

Almost surely, 218408293102 is an apocalyptic number.

18408293102 is a deficient number, since it is larger than the sum of its proper divisors (9205480954).

18408293102 is a wasteful number, since it uses less digits than its factorization.

18408293102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444802.

The product of its (nonzero) digits is 27648, while the sum is 38.

The spelling of 18408293102 in words is "eighteen billion, four hundred eight million, two hundred ninety-three thousand, one hundred two".

Divisors: 1 2 21757 43514 423043 846086 9204146551 18408293102