18630694079 has 2 divisors, whose sum is σ = 18630694080. Its totient is φ = 18630694078.

The previous prime is 18630694073. The next prime is 18630694099. The reversal of 18630694079 is 97049603681.

It is a weak prime.

It is an emirp because it is prime and its reverse (97049603681) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18630694079 - 2⁴ = 18630694063 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18630694079.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18630694073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9315347039 + 9315347040.

It is an arithmetic number, because the mean of its divisors is an integer number (9315347040).

Almost surely, 2^18630694079 is an apocalyptic number.

18630694079 is a deficient number, since it is larger than the sum of its proper divisors (1).

18630694079 is an equidigital number, since it uses as much as digits as its factorization.

18630694079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1959552, while the sum is 53.

The spelling of 18630694079 in words is "eighteen billion, six hundred thirty million, six hundred ninety-four thousand, seventy-nine".