18131110859 has 2 divisors, whose sum is σ = 18131110860. Its totient is φ = 18131110858.

The previous prime is 18131110853. The next prime is 18131110871. The reversal of 18131110859 is 95801113181.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18131110859 - 2¹⁶ = 18131045323 is a prime.

It is not a weakly prime, because it can be changed into another prime (18131110853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9065555429 + 9065555430.

It is an arithmetic number, because the mean of its divisors is an integer number (9065555430).

Almost surely, 2^18131110859 is an apocalyptic number.

18131110859 is a deficient number, since it is larger than the sum of its proper divisors (1).

18131110859 is an equidigital number, since it uses as much as digits as its factorization.

18131110859 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 38.

The spelling of 18131110859 in words is "eighteen billion, one hundred thirty-one million, one hundred ten thousand, eight hundred fifty-nine".