18074297172 has 24 divisors (see below), whose sum is σ = 42181213536. Its totient is φ = 6023643808.

The previous prime is 18074297149. The next prime is 18074297173. The reversal of 18074297172 is 27179247081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18074297173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71778 + ... + 203225.

It is an arithmetic number, because the mean of its divisors is an integer number (1757550564).

Almost surely, 2^18074297172 is an apocalyptic number.

18074297172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18074297172 is an abundant number, since it is smaller than the sum of its proper divisors (24106916364).

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

18074297172 is a wasteful number, since it uses less digits than its factorization.

18074297172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280487 (or 280485 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 48.

The spelling of 18074297172 in words is "eighteen billion, seventy-four million, two hundred ninety-seven thousand, one hundred seventy-two".