18160872 has 16 divisors (see below), whose sum is σ = 45402240. Its totient is φ = 6053616.

The previous prime is 18160871. The next prime is 18160907. The reversal of 18160872 is 27806181.

It is a happy number.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (18160871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 378328 + ... + 378375.

It is an arithmetic number, because the mean of its divisors is an integer number (2837640).

Almost surely, 2^18160872 is an apocalyptic number.

18160872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18160872 is an abundant number, since it is smaller than the sum of its proper divisors (27241368).

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

18160872 is a wasteful number, since it uses less digits than its factorization.

18160872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756712 (or 756708 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 33.

The square root of 18160872 is about 4261.5574617738. The cubic root of 18160872 is about 262.8525729469.

The spelling of 18160872 in words is "eighteen million, one hundred sixty thousand, eight hundred seventy-two".