18034903872 has 42 divisors (see below), whose sum is σ = 51693797298. Its totient is φ = 6011634432.

The previous prime is 18034903871. The next prime is 18034903879. The reversal of 18034903872 is 27830943081.

18034903872 is a `hidden beast` number, since 1 + 80 + 3 + 490 + 3 + 87 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9188372736 + 8846531136 = 95856^2 + 94056^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18034903871) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15654723 + ... + 15655874.

Almost surely, 2^18034903872 is an apocalyptic number.

18034903872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18034903872 is an abundant number, since it is smaller than the sum of its proper divisors (33658893426).

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

18034903872 is a wasteful number, since it uses less digits than its factorization.

18034903872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31310615 (or 31310602 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 18034903872 in words is "eighteen billion, thirty-four million, nine hundred three thousand, eight hundred seventy-two".