18756064907 has 2 divisors, whose sum is σ = 18756064908. Its totient is φ = 18756064906.

The previous prime is 18756064903. The next prime is 18756064927. The reversal of 18756064907 is 70946065781.

It is a weak prime.

It is an emirp because it is prime and its reverse (70946065781) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18756064907 - 2² = 18756064903 is a prime.

It is not a weakly prime, because it can be changed into another prime (18756064903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9378032453 + 9378032454.

It is an arithmetic number, because the mean of its divisors is an integer number (9378032454).

Almost surely, 2^18756064907 is an apocalyptic number.

18756064907 is a deficient number, since it is larger than the sum of its proper divisors (1).

18756064907 is an equidigital number, since it uses as much as digits as its factorization.

18756064907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2540160, while the sum is 53.

The spelling of 18756064907 in words is "eighteen billion, seven hundred fifty-six million, sixty-four thousand, nine hundred seven".