18115079 has 2 divisors, whose sum is σ = 18115080. Its totient is φ = 18115078.

The previous prime is 18115061. The next prime is 18115091. The reversal of 18115079 is 97051181.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18115079 - 2¹⁶ = 18049543 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18115039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9057539 + 9057540.

It is an arithmetic number, because the mean of its divisors is an integer number (9057540).

Almost surely, 2^18115079 is an apocalyptic number.

18115079 is a deficient number, since it is larger than the sum of its proper divisors (1).

18115079 is an equidigital number, since it uses as much as digits as its factorization.

18115079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 32.

The square root of 18115079 is about 4256.1812696360. The cubic root of 18115079 is about 262.6314576634.

The spelling of 18115079 in words is "eighteen million, one hundred fifteen thousand, seventy-nine".