18613626679 has 2 divisors, whose sum is σ = 18613626680. Its totient is φ = 18613626678.

The previous prime is 18613626649. The next prime is 18613626683. The reversal of 18613626679 is 97662631681.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18613626679 - 2⁹ = 18613626167 is a prime.

It is a super-3 number, since 3×18613626679³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18613626649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9306813339 + 9306813340.

It is an arithmetic number, because the mean of its divisors is an integer number (9306813340).

Almost surely, 2^18613626679 is an apocalyptic number.

18613626679 is a deficient number, since it is larger than the sum of its proper divisors (1).

18613626679 is an equidigital number, since it uses as much as digits as its factorization.

18613626679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3919104, while the sum is 55.

The spelling of 18613626679 in words is "eighteen billion, six hundred thirteen million, six hundred twenty-six thousand, six hundred seventy-nine".