18837405916 has 24 divisors (see below), whose sum is σ = 37685129216. Its totient is φ = 8070963120.

The previous prime is 18837405911. The next prime is 18837405919. The reversal of 18837405916 is 61950473881.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18837405911) by changing a digit.

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, 14101 + ... + 194611.

Almost surely, 2^18837405916 is an apocalyptic number.

It is an amenable number.

18837405916 is an abundant number, since it is smaller than the sum of its proper divisors (18847723300).

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

18837405916 is a wasteful number, since it uses less digits than its factorization.

18837405916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184249 (or 184247 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 52.

The spelling of 18837405916 in words is "eighteen billion, eight hundred thirty-seven million, four hundred five thousand, nine hundred sixteen".