1309434874 has 16 divisors (see below), whose sum is σ = 2149568640. Its totient is φ = 593292960.

The previous prime is 1309434871. The next prime is 1309434943. The reversal of 1309434874 is 4784349031.

It is a self number, because there is not a number n which added to its sum of digits gives 1309434874.

It is not an unprimeable number, because it can be changed into a prime (1309434871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88194 + ... + 101965.

It is an arithmetic number, because the mean of its divisors is an integer number (134348040).

Almost surely, 2^1309434874 is an apocalyptic number.

1309434874 is a deficient number, since it is larger than the sum of its proper divisors (840133766).

1309434874 is a wasteful number, since it uses less digits than its factorization.

1309434874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190485.

The product of its (nonzero) digits is 290304, while the sum is 43.

The square root of 1309434874 is about 36186.1143810716. The cubic root of 1309434874 is about 1094.0268172748.

The spelling of 1309434874 in words is "one billion, three hundred nine million, four hundred thirty-four thousand, eight hundred seventy-four".