18630786079 has 2 divisors, whose sum is σ = 18630786080. Its totient is φ = 18630786078.

The previous prime is 18630786077. The next prime is 18630786127. The reversal of 18630786079 is 97068703681.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18630786079 - 2¹ = 18630786077 is a prime.

Together with 18630786077, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18630786073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9315393039 + 9315393040.

It is an arithmetic number, because the mean of its divisors is an integer number (9315393040).

Almost surely, 2^18630786079 is an apocalyptic number.

18630786079 is a deficient number, since it is larger than the sum of its proper divisors (1).

18630786079 is an equidigital number, since it uses as much as digits as its factorization.

18630786079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3048192, while the sum is 55.

The spelling of 18630786079 in words is "eighteen billion, six hundred thirty million, seven hundred eighty-six thousand, seventy-nine".