18091252 has 12 divisors (see below), whose sum is σ = 31701600. Its totient is φ = 9033656.

The previous prime is 18091243. The next prime is 18091279. The reversal of 18091252 is 25219081.

It is a self number, because there is not a number n which added to its sum of digits gives 18091252.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 999 + ... + 6097.

It is an arithmetic number, because the mean of its divisors is an integer number (2641800).

Almost surely, 2^18091252 is an apocalyptic number.

It is an amenable number.

18091252 is a deficient number, since it is larger than the sum of its proper divisors (13610348).

18091252 is a wasteful number, since it uses less digits than its factorization.

18091252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5990 (or 5988 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 18091252 is about 4253.3812431993. The cubic root of 18091252 is about 262.5162596126.

The spelling of 18091252 in words is "eighteen million, ninety-one thousand, two hundred fifty-two".