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18982931036 = 2227117511929
BaseRepresentation
bin10001101011011110…
…001000101001011100
31210222221201210220212
4101223132020221130
5302334112243121
612415354031552
71241262152156
oct215336105134
953887653825
1018982931036
118061408063
1238194185b8
131a36a72494
14cc11b3ad6
1576181725b
hex46b788a5c

18982931036 has 12 divisors (see below), whose sum is σ = 33342714720. Its totient is φ = 9456441120.

The previous prime is 18982930999. The next prime is 18982931063. The reversal of 18982931036 is 63013928981.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8754881 + ... + 8757048.

It is an arithmetic number, because the mean of its divisors is an integer number (2778559560).

Almost surely, 218982931036 is an apocalyptic number.

It is an amenable number.

18982931036 is a deficient number, since it is larger than the sum of its proper divisors (14359783684).

18982931036 is a wasteful number, since it uses less digits than its factorization.

18982931036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17512204 (or 17512202 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 50.

The spelling of 18982931036 in words is "eighteen billion, nine hundred eighty-two million, nine hundred thirty-one thousand, thirty-six".

Divisors: 1 2 4 271 542 1084 17511929 35023858 70047716 4745732759 9491465518 18982931036