1309960172 has 6 divisors (see below), whose sum is σ = 2292430308. Its totient is φ = 654980084.

The previous prime is 1309960163. The next prime is 1309960219. The reversal of 1309960172 is 2710699031.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163745018 + ... + 163745025.

It is an arithmetic number, because the mean of its divisors is an integer number (382071718).

Almost surely, 2^1309960172 is an apocalyptic number.

It is an amenable number.

1309960172 is a deficient number, since it is larger than the sum of its proper divisors (982470136).

1309960172 is a wasteful number, since it uses less digits than its factorization.

1309960172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327490047 (or 327490045 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 1309960172 is about 36193.3719346512. The cubic root of 1309960172 is about 1094.1730924044.

The spelling of 1309960172 in words is "one billion, three hundred nine million, nine hundred sixty thousand, one hundred seventy-two".