1513123172 has 24 divisors (see below), whose sum is σ = 3014286912. Its totient is φ = 657879200.

The previous prime is 1513123147. The next prime is 1513123181. The reversal of 1513123172 is 2713213151.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 746579 + ... + 748602.

It is an arithmetic number, because the mean of its divisors is an integer number (125595288).

Almost surely, 2^1513123172 is an apocalyptic number.

It is an amenable number.

1513123172 is a deficient number, since it is larger than the sum of its proper divisors (1501163740).

1513123172 is a wasteful number, since it uses less digits than its factorization.

1513123172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1495219 (or 1495217 counting only the distinct ones).

The product of its digits is 1260, while the sum is 26.

The square root of 1513123172 is about 38898.8839428588. The cubic root of 1513123172 is about 1148.0428391546.

The spelling of 1513123172 in words is "one billion, five hundred thirteen million, one hundred twenty-three thousand, one hundred seventy-two".