18996460738331 has 4 divisors (see below), whose sum is σ = 19459789049064. Its totient is φ = 18533132427600.

The previous prime is 18996460738313. The next prime is 18996460738361. The reversal of 18996460738331 is 13383706469981.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18996460738331 is a prime.

It is a super-2 number, since 2×18996460738331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18996460738361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231664155305 + ... + 231664155386.

It is an arithmetic number, because the mean of its divisors is an integer number (4864947262266).

Almost surely, 2^{18996460738331} is an apocalyptic number.

18996460738331 is a deficient number, since it is larger than the sum of its proper divisors (463328310733).

18996460738331 is an equidigital number, since it uses as much as digits as its factorization.

18996460738331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463328310732.

The product of its (nonzero) digits is 141087744, while the sum is 68.

The spelling of 18996460738331 in words is "eighteen trillion, nine hundred ninety-six billion, four hundred sixty million, seven hundred thirty-eight thousand, three hundred thirty-one".