18166252 has 24 divisors (see below), whose sum is σ = 34969536. Its totient is φ = 8204928.

The previous prime is 18166193. The next prime is 18166283. The reversal of 18166252 is 25266181.

It is a super-3 number, since 3×18166252³ (a number of 23 digits) contains 333 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, 1273 + ... + 6160.

It is an arithmetic number, because the mean of its divisors is an integer number (1457064).

Almost surely, 2^18166252 is an apocalyptic number.

It is an amenable number.

18166252 is a deficient number, since it is larger than the sum of its proper divisors (16803284).

18166252 is a wasteful number, since it uses less digits than its factorization.

18166252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7497 (or 7495 counting only the distinct ones).

The product of its digits is 5760, while the sum is 31.

The square root of 18166252 is about 4262.1886396545. The cubic root of 18166252 is about 262.8785263120.

The spelling of 18166252 in words is "eighteen million, one hundred sixty-six thousand, two hundred fifty-two".