18372055 has 16 divisors (see below), whose sum is σ = 24776640. Its totient is φ = 12976128.

The previous prime is 18372049. The next prime is 18372071. The reversal of 18372055 is 55027381.

It is a cyclic number.

It is not a de Polignac number, because 18372055 - 2¹¹ = 18370007 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4650 + ... + 7639.

It is an arithmetic number, because the mean of its divisors is an integer number (1548540).

Almost surely, 2^18372055 is an apocalyptic number.

18372055 is a deficient number, since it is larger than the sum of its proper divisors (6404585).

18372055 is a wasteful number, since it uses less digits than its factorization.

18372055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12330.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 18372055 is about 4286.2635243298. The cubic root of 18372055 is about 263.8675060216.

The spelling of 18372055 in words is "eighteen million, three hundred seventy-two thousand, fifty-five".