18560879 has 2 divisors, whose sum is σ = 18560880. Its totient is φ = 18560878.

The previous prime is 18560873. The next prime is 18560903. The reversal of 18560879 is 97806581.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18560879 - 2⁴ = 18560863 is a prime.

It is a Sophie Germain 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 (18560873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9280439 + 9280440.

It is an arithmetic number, because the mean of its divisors is an integer number (9280440).

Almost surely, 2^18560879 is an apocalyptic number.

18560879 is a deficient number, since it is larger than the sum of its proper divisors (1).

18560879 is an equidigital number, since it uses as much as digits as its factorization.

18560879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 18560879 is about 4308.2338608762. The cubic root of 18560879 is about 264.7684175922.

The spelling of 18560879 in words is "eighteen million, five hundred sixty thousand, eight hundred seventy-nine".