18894960757 has 2 divisors, whose sum is σ = 18894960758. Its totient is φ = 18894960756.

The previous prime is 18894960739. The next prime is 18894960769. The reversal of 18894960757 is 75706949881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18397938321 + 497022436 = 135639^2 + 22294^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18894960757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18894960737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9447480378 + 9447480379.

It is an arithmetic number, because the mean of its divisors is an integer number (9447480379).

Almost surely, 2^18894960757 is an apocalyptic number.

It is an amenable number.

18894960757 is a deficient number, since it is larger than the sum of its proper divisors (1).

18894960757 is an equidigital number, since it uses as much as digits as its factorization.

18894960757 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30481920, while the sum is 64.

The spelling of 18894960757 in words is "eighteen billion, eight hundred ninety-four million, nine hundred sixty thousand, seven hundred fifty-seven".