1291314664 has 32 divisors (see below), whose sum is σ = 2469841920. Its totient is φ = 632814336.

The previous prime is 1291314649. The next prime is 1291314671. The reversal of 1291314664 is 4664131921.

It is a super-2 number, since 2×1291314664² = 3334987122922865792, which contains 22 as substring.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 76672 + ... + 91984.

It is an arithmetic number, because the mean of its divisors is an integer number (77182560).

Almost surely, 2^1291314664 is an apocalyptic number.

It is an amenable number.

1291314664 is a deficient number, since it is larger than the sum of its proper divisors (1178527256).

1291314664 is a wasteful number, since it uses less digits than its factorization.

1291314664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15529 (or 15525 counting only the distinct ones).

The product of its digits is 31104, while the sum is 37.

The square root of 1291314664 is about 35934.8669678907. The cubic root of 1291314664 is about 1088.9569080159.

The spelling of 1291314664 in words is "one billion, two hundred ninety-one million, three hundred fourteen thousand, six hundred sixty-four".