18876936607 has 2 divisors, whose sum is σ = 18876936608. Its totient is φ = 18876936606.

The previous prime is 18876936577. The next prime is 18876936623. The reversal of 18876936607 is 70663967881.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18876936607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18876936007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9438468303 + 9438468304.

It is an arithmetic number, because the mean of its divisors is an integer number (9438468304).

Almost surely, 2^18876936607 is an apocalyptic number.

18876936607 is a deficient number, since it is larger than the sum of its proper divisors (1).

18876936607 is an equidigital number, since it uses as much as digits as its factorization.

18876936607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18289152, while the sum is 61.

The spelling of 18876936607 in words is "eighteen billion, eight hundred seventy-six million, nine hundred thirty-six thousand, six hundred seven".