18606700979 has 2 divisors, whose sum is σ = 18606700980. Its totient is φ = 18606700978.

The previous prime is 18606700963. The next prime is 18606700999. The reversal of 18606700979 is 97900760681.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18606700979 - 2⁴ = 18606700963 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18606700979.

It is not a weakly prime, because it can be changed into another prime (18606700999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9303350489 + 9303350490.

It is an arithmetic number, because the mean of its divisors is an integer number (9303350490).

Almost surely, 2^18606700979 is an apocalyptic number.

18606700979 is a deficient number, since it is larger than the sum of its proper divisors (1).

18606700979 is an equidigital number, since it uses as much as digits as its factorization.

18606700979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1143072, while the sum is 53.

The spelling of 18606700979 in words is "eighteen billion, six hundred six million, seven hundred thousand, nine hundred seventy-nine".