18438059 has 2 divisors, whose sum is σ = 18438060. Its totient is φ = 18438058.

The previous prime is 18438029. The next prime is 18438073. The reversal of 18438059 is 95083481.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18438059 - 2¹² = 18433963 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18438029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9219029 + 9219030.

It is an arithmetic number, because the mean of its divisors is an integer number (9219030).

Almost surely, 2^18438059 is an apocalyptic number.

18438059 is a deficient number, since it is larger than the sum of its proper divisors (1).

18438059 is an equidigital number, since it uses as much as digits as its factorization.

18438059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 18438059 is about 4293.9561013126. The cubic root of 18438059 is about 264.1831211521.

The spelling of 18438059 in words is "eighteen million, four hundred thirty-eight thousand, fifty-nine".