1613038820 has 48 divisors (see below), whose sum is σ = 3577392000. Its totient is φ = 609246720.

The previous prime is 1613038741. The next prime is 1613038837. The reversal of 1613038820 is 288303161.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111356 + ... + 125004.

It is an arithmetic number, because the mean of its divisors is an integer number (74529000).

Almost surely, 2^1613038820 is an apocalyptic number.

1613038820 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 1613038820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1788696000).

1613038820 is an abundant number, since it is smaller than the sum of its proper divisors (1964353180).

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

1613038820 is a wasteful number, since it uses less digits than its factorization.

1613038820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13988 (or 13986 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 1613038820 is about 40162.6545437425. The cubic root of 1613038820 is about 1172.7756487648.

The spelling of 1613038820 in words is "one billion, six hundred thirteen million, thirty-eight thousand, eight hundred twenty".