18756064927 has 2 divisors, whose sum is σ = 18756064928. Its totient is φ = 18756064926.

The previous prime is 18756064907. The next prime is 18756064939. The reversal of 18756064927 is 72946065781.

It is a strong prime.

It is an emirp because it is prime and its reverse (72946065781) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18756064927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18756064907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9378032463 + 9378032464.

It is an arithmetic number, because the mean of its divisors is an integer number (9378032464).

Almost surely, 2^18756064927 is an apocalyptic number.

18756064927 is a deficient number, since it is larger than the sum of its proper divisors (1).

18756064927 is an equidigital number, since it uses as much as digits as its factorization.

18756064927 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5080320, while the sum is 55.

The spelling of 18756064927 in words is "eighteen billion, seven hundred fifty-six million, sixty-four thousand, nine hundred twenty-seven".