1613239320 has 256 divisors, whose sum is σ = 6297108480. Its totient is φ = 320601600.

The previous prime is 1613239307. The next prime is 1613239363. The reversal of 1613239320 is 239323161.

It is a super-2 number, since 2×1613239320² = 5205082207188124800, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 208725 + ... + 216315.

It is an arithmetic number, because the mean of its divisors is an integer number (24598080).

Almost surely, 2^1613239320 is an apocalyptic number.

1613239320 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 1613239320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3148554240).

1613239320 is an abundant number, since it is smaller than the sum of its proper divisors (4683869160).

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

1613239320 is a wasteful number, since it uses less digits than its factorization.

1613239320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7646 (or 7642 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 30.

The square root of 1613239320 is about 40165.1505661313. The cubic root of 1613239320 is about 1172.8242385802.

The spelling of 1613239320 in words is "one billion, six hundred thirteen million, two hundred thirty-nine thousand, three hundred twenty".