18104331 has 16 divisors (see below), whose sum is σ = 27802368. Its totient is φ = 10264800.

The previous prime is 18104287. The next prime is 18104347. The reversal of 18104331 is 13340181.

It is not a de Polignac number, because 18104331 - 2⁶ = 18104267 is a prime.

It is a super-2 number, since 2×18104331² = 655533601915122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 18104298 and 18104307.

It is not an unprimeable number, because it can be changed into a prime (18104431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 540 + ... + 6041.

It is an arithmetic number, because the mean of its divisors is an integer number (1737648).

Almost surely, 2^18104331 is an apocalyptic number.

18104331 is a deficient number, since it is larger than the sum of its proper divisors (9698037).

18104331 is a wasteful number, since it uses less digits than its factorization.

18104331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6722.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 18104331 is about 4254.9184481021. The cubic root of 18104331 is about 262.5795060755.

The spelling of 18104331 in words is "eighteen million, one hundred four thousand, three hundred thirty-one".