18170737472 has 28 divisors (see below), whose sum is σ = 37625280096. Its totient is φ = 8690352000.

The previous prime is 18170737469. The next prime is 18170737477. The reversal of 18170737472 is 27473707181.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18170737477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6170654 + ... + 6173597.

Almost surely, 2^18170737472 is an apocalyptic number.

It is an amenable number.

18170737472 is an abundant number, since it is smaller than the sum of its proper divisors (19454542624).

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

18170737472 is a wasteful number, since it uses less digits than its factorization.

18170737472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12344286 (or 12344276 counting only the distinct ones).

The product of its (nonzero) digits is 460992, while the sum is 47.

The spelling of 18170737472 in words is "eighteen billion, one hundred seventy million, seven hundred thirty-seven thousand, four hundred seventy-two".