13618879 has 2 divisors, whose sum is σ = 13618880. Its totient is φ = 13618878.

The previous prime is 13618837. The next prime is 13618903. The reversal of 13618879 is 97881631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13618879 - 2¹⁷ = 13487807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13618279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6809439 + 6809440.

It is an arithmetic number, because the mean of its divisors is an integer number (6809440).

Almost surely, 2^13618879 is an apocalyptic number.

13618879 is a deficient number, since it is larger than the sum of its proper divisors (1).

13618879 is an equidigital number, since it uses as much as digits as its factorization.

13618879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 43.

The square root of 13618879 is about 3690.3765390540. The cubic root of 13618879 is about 238.8070371663.

The spelling of 13618879 in words is "thirteen million, six hundred eighteen thousand, eight hundred seventy-nine".