18431052 has 24 divisors (see below), whose sum is σ = 43154496. Its totient is φ = 6122448.

The previous prime is 18431051. The next prime is 18431053. The reversal of 18431052 is 25013481.

It is an interprime number because it is at equal distance from previous prime (18431051) and next prime (18431053).

It is not an unprimeable number, because it can be changed into a prime (18431051) 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 7 ways as a sum of consecutive naturals, for example, 1183 + ... + 6185.

It is an arithmetic number, because the mean of its divisors is an integer number (1798104).

Almost surely, 2^18431052 is an apocalyptic number.

18431052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18431052 is an abundant number, since it is smaller than the sum of its proper divisors (24723444).

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

18431052 is a wasteful number, since it uses less digits than its factorization.

18431052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5317 (or 5315 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 18431052 is about 4293.1401095236. The cubic root of 18431052 is about 264.1496511490.

The spelling of 18431052 in words is "eighteen million, four hundred thirty-one thousand, fifty-two".