11964789931 has 2 divisors, whose sum is σ = 11964789932. Its totient is φ = 11964789930.

The previous prime is 11964789913. The next prime is 11964789943. The reversal of 11964789931 is 13998746911.

Together with previous prime (11964789913) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11964789931 - 2¹⁵ = 11964757163 is a prime.

It is a super-2 number, since 2×11964789931² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11964789631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5982394965 + 5982394966.

It is an arithmetic number, because the mean of its divisors is an integer number (5982394966).

Almost surely, 2^11964789931 is an apocalyptic number.

11964789931 is a deficient number, since it is larger than the sum of its proper divisors (1).

11964789931 is an equidigital number, since it uses as much as digits as its factorization.

11964789931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2939328, while the sum is 58.

The spelling of 11964789931 in words is "eleven billion, nine hundred sixty-four million, seven hundred eighty-nine thousand, nine hundred thirty-one".