18166897024 has 64 divisors (see below), whose sum is σ = 38384909280. Its totient is φ = 8545996800.

The previous prime is 18166896997. The next prime is 18166897043. The reversal of 18166897024 is 42079866181.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×18166897024² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129004 + ... + 230164.

Almost surely, 2^18166897024 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18166897024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19192454640).

18166897024 is an abundant number, since it is smaller than the sum of its proper divisors (20218012256).

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

18166897024 is a wasteful number, since it uses less digits than its factorization.

18166897024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101259 (or 101247 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 52.

The spelling of 18166897024 in words is "eighteen billion, one hundred sixty-six million, eight hundred ninety-seven thousand, twenty-four".