18534079 has 2 divisors, whose sum is σ = 18534080. Its totient is φ = 18534078.

The previous prime is 18534073. The next prime is 18534137. The reversal of 18534079 is 97043581.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18534079 - 2¹³ = 18525887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18534073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9267039 + 9267040.

It is an arithmetic number, because the mean of its divisors is an integer number (9267040).

Almost surely, 2^18534079 is an apocalyptic number.

18534079 is a deficient number, since it is larger than the sum of its proper divisors (1).

18534079 is an equidigital number, since it uses as much as digits as its factorization.

18534079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 18534079 is about 4305.1224140551. The cubic root of 18534079 is about 264.6409234232.

The spelling of 18534079 in words is "eighteen million, five hundred thirty-four thousand, seventy-nine".