18031795679 has 2 divisors, whose sum is σ = 18031795680. Its totient is φ = 18031795678.

The previous prime is 18031795667. The next prime is 18031795721. The reversal of 18031795679 is 97659713081.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18031795679 - 2⁸ = 18031795423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18031795279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9015897839 + 9015897840.

It is an arithmetic number, because the mean of its divisors is an integer number (9015897840).

Almost surely, 2^18031795679 is an apocalyptic number.

18031795679 is a deficient number, since it is larger than the sum of its proper divisors (1).

18031795679 is an equidigital number, since it uses as much as digits as its factorization.

18031795679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2857680, while the sum is 56.

The spelling of 18031795679 in words is "eighteen billion, thirty-one million, seven hundred ninety-five thousand, six hundred seventy-nine".