18312059 has 2 divisors, whose sum is σ = 18312060. Its totient is φ = 18312058.

The previous prime is 18312053. The next prime is 18312101. The reversal of 18312059 is 95021381.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18312059 - 2²⁴ = 1534843 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18312053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9156029 + 9156030.

It is an arithmetic number, because the mean of its divisors is an integer number (9156030).

Almost surely, 2^18312059 is an apocalyptic number.

18312059 is a deficient number, since it is larger than the sum of its proper divisors (1).

18312059 is an equidigital number, since it uses as much as digits as its factorization.

18312059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 18312059 is about 4279.2591648555. The cubic root of 18312059 is about 263.5799631773.

The spelling of 18312059 in words is "eighteen million, three hundred twelve thousand, fifty-nine".