309593640734 has 12 divisors (see below), whose sum is σ = 540209312064. Its totient is φ = 132682988844.

The previous prime is 309593640673. The next prime is 309593640743. The reversal of 309593640734 is 437046395903.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1579559294 + ... + 1579559489.

It is an arithmetic number, because the mean of its divisors is an integer number (45017442672).

Almost surely, 2^309593640734 is an apocalyptic number.

309593640734 is a deficient number, since it is larger than the sum of its proper divisors (230615671330).

309593640734 is a wasteful number, since it uses less digits than its factorization.

309593640734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3159118799 (or 3159118792 counting only the distinct ones).

The product of its (nonzero) digits is 7348320, while the sum is 53.

The spelling of 309593640734 in words is "three hundred nine billion, five hundred ninety-three million, six hundred forty thousand, seven hundred thirty-four".