18013750957 has 2 divisors, whose sum is σ = 18013750958. Its totient is φ = 18013750956.

The previous prime is 18013750913. The next prime is 18013750961. The reversal of 18013750957 is 75905731081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9516782916 + 8496968041 = 97554^2 + 92179^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18013750957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18013750057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9006875478 + 9006875479.

It is an arithmetic number, because the mean of its divisors is an integer number (9006875479).

Almost surely, 2^18013750957 is an apocalyptic number.

It is an amenable number.

18013750957 is a deficient number, since it is larger than the sum of its proper divisors (1).

18013750957 is an equidigital number, since it uses as much as digits as its factorization.

18013750957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 264600, while the sum is 46.

The spelling of 18013750957 in words is "eighteen billion, thirteen million, seven hundred fifty thousand, nine hundred fifty-seven".