1613057720 has 96 divisors (see below), whose sum is σ = 3882232800. Its totient is φ = 602461440.

The previous prime is 1613057659. The next prime is 1613057741. The reversal of 1613057720 is 277503161.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1114037 + ... + 1115483.

It is an arithmetic number, because the mean of its divisors is an integer number (40439925).

Almost surely, 2^1613057720 is an apocalyptic number.

1613057720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1613057720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1941116400).

1613057720 is an abundant number, since it is smaller than the sum of its proper divisors (2269175080).

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

1613057720 is a wasteful number, since it uses less digits than its factorization.

1613057720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1549 (or 1514 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 32.

The square root of 1613057720 is about 40162.8898362655. The cubic root of 1613057720 is about 1172.7802292235.

The spelling of 1613057720 in words is "one billion, six hundred thirteen million, fifty-seven thousand, seven hundred twenty".