18850400439537 has 16 divisors (see below), whose sum is σ = 26456794920000. Its totient is φ = 11905474420224.

The previous prime is 18850400439529. The next prime is 18850400439547. The reversal of 18850400439537 is 73593400405881.

It is not a de Polignac number, because 18850400439537 - 2³ = 18850400439529 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (18850400439547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29103589 + ... + 29744237.

It is an arithmetic number, because the mean of its divisors is an integer number (1653549682500).

Almost surely, 2^{18850400439537} is an apocalyptic number.

It is an amenable number.

18850400439537 is a deficient number, since it is larger than the sum of its proper divisors (7606394480463).

18850400439537 is a wasteful number, since it uses less digits than its factorization.

18850400439537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156880.

The product of its (nonzero) digits is 14515200, while the sum is 57.

The spelling of 18850400439537 in words is "eighteen trillion, eight hundred fifty billion, four hundred million, four hundred thirty-nine thousand, five hundred thirty-seven".