1264513931 has 2 divisors, whose sum is σ = 1264513932. Its totient is φ = 1264513930.

The previous prime is 1264513891. The next prime is 1264514039. The reversal of 1264513931 is 1393154621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1264513931 - 2¹⁴ = 1264497547 is a prime.

It is a super-2 number, since 2×1264513931² = 3197990963386145522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1264513891 and 1264513900.

It is not a weakly prime, because it can be changed into another prime (1264513331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632256965 + 632256966.

It is an arithmetic number, because the mean of its divisors is an integer number (632256966).

Almost surely, 2^1264513931 is an apocalyptic number.

1264513931 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264513931 is an equidigital number, since it uses as much as digits as its factorization.

1264513931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 35.

The square root of 1264513931 is about 35560.0046541054. The cubic root of 1264513931 is about 1081.3705539411.

The spelling of 1264513931 in words is "one billion, two hundred sixty-four million, five hundred thirteen thousand, nine hundred thirty-one".