18258279139 has 2 divisors, whose sum is σ = 18258279140. Its totient is φ = 18258279138.

The previous prime is 18258279133. The next prime is 18258279163. The reversal of 18258279139 is 93197285281.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18258279139 - 2²³ = 18249890531 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18258279139.

It is not a weakly prime, because it can be changed into another prime (18258279133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9129139569 + 9129139570.

It is an arithmetic number, because the mean of its divisors is an integer number (9129139570).

Almost surely, 2^18258279139 is an apocalyptic number.

18258279139 is a deficient number, since it is larger than the sum of its proper divisors (1).

18258279139 is an equidigital number, since it uses as much as digits as its factorization.

18258279139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2177280, while the sum is 55.

The spelling of 18258279139 in words is "eighteen billion, two hundred fifty-eight million, two hundred seventy-nine thousand, one hundred thirty-nine".