1513317720 has 64 divisors (see below), whose sum is σ = 4542935040. Its totient is φ = 403286400.

The previous prime is 1513317691. The next prime is 1513317721. The reversal of 1513317720 is 277133151.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1513317721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 238185 + ... + 244455.

It is an arithmetic number, because the mean of its divisors is an integer number (70983360).

Almost surely, 2^1513317720 is an apocalyptic number.

1513317720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1513317720 is an abundant number, since it is smaller than the sum of its proper divisors (3029617320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1513317720 is a wasteful number, since it uses less digits than its factorization.

1513317720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8296 (or 8292 counting only the distinct ones).

The product of its (nonzero) digits is 4410, while the sum is 30.

The square root of 1513317720 is about 38901.3845511956. The cubic root of 1513317720 is about 1148.0920397905.

The spelling of 1513317720 in words is "one billion, five hundred thirteen million, three hundred seventeen thousand, seven hundred twenty".