1316399432 has 8 divisors (see below), whose sum is σ = 2468248950. Its totient is φ = 658199712.

The previous prime is 1316399419. The next prime is 1316399479. The reversal of 1316399432 is 2349936131.

It can be written as a sum of positive squares in only one way, i.e., 1126676356 + 189723076 = 33566^2 + 13774^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 1316399432.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82274957 + ... + 82274972.

Almost surely, 2^1316399432 is an apocalyptic number.

It is an amenable number.

1316399432 is a deficient number, since it is larger than the sum of its proper divisors (1151849518).

1316399432 is a wasteful number, since it uses less digits than its factorization.

1316399432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164549935 (or 164549931 counting only the distinct ones).

The product of its digits is 104976, while the sum is 41.

The square root of 1316399432 is about 36282.2192265027. The cubic root of 1316399432 is about 1095.9630073472.

The spelling of 1316399432 in words is "one billion, three hundred sixteen million, three hundred ninety-nine thousand, four hundred thirty-two".