1309645382402 has 128 divisors (see below), whose sum is σ = 2402220519936. Its totient is φ = 523852572672.

The previous prime is 1309645382393. The next prime is 1309645382431. The reversal of 1309645382402 is 2042835469031.

It is a super-2 number, since 2×1309645382402² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 251997668 + ... + 252002864.

It is an arithmetic number, because the mean of its divisors is an integer number (18767347812).

Almost surely, 2^{1309645382402} is an apocalyptic number.

1309645382402 is a deficient number, since it is larger than the sum of its proper divisors (1092575137534).

1309645382402 is a wasteful number, since it uses less digits than its factorization.

1309645382402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5500.

The product of its (nonzero) digits is 1244160, while the sum is 47.

The spelling of 1309645382402 in words is "one trillion, three hundred nine billion, six hundred forty-five million, three hundred eighty-two thousand, four hundred two".