309864349137 has 16 divisors (see below), whose sum is σ = 472187284352. Its totient is φ = 177060453120.

The previous prime is 309864349133. The next prime is 309864349147. The reversal of 309864349137 is 731943468903.

It is not a de Polignac number, because 309864349137 - 2² = 309864349133 is a prime.

It is not an unprimeable number, because it can be changed into a prime (309864349133) 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 in 15 ways as a sum of consecutive naturals, for example, 660087 + ... + 1027347.

It is an arithmetic number, because the mean of its divisors is an integer number (29511705272).

Almost surely, 2^309864349137 is an apocalyptic number.

It is an amenable number.

309864349137 is a deficient number, since it is larger than the sum of its proper divisors (162322935215).

309864349137 is a wasteful number, since it uses less digits than its factorization.

309864349137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407448.

The product of its (nonzero) digits is 11757312, while the sum is 57.

The spelling of 309864349137 in words is "three hundred nine billion, eight hundred sixty-four million, three hundred forty-nine thousand, one hundred thirty-seven".