1613885020 has 48 divisors (see below), whose sum is σ = 3710030688. Its totient is φ = 584840960.

The previous prime is 1613885011. The next prime is 1613885047. The reversal of 1613885020 is 205883161.

It is a congruent 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, 51942 + ... + 76978.

It is an arithmetic number, because the mean of its divisors is an integer number (77292306).

Almost surely, 2^1613885020 is an apocalyptic number.

1613885020 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 1613885020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1855015344).

1613885020 is an abundant number, since it is smaller than the sum of its proper divisors (2096145668).

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

1613885020 is a wasteful number, since it uses less digits than its factorization.

1613885020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25350 (or 25348 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 1613885020 is about 40173.1878247171. The cubic root of 1613885020 is about 1172.9806922422.

The spelling of 1613885020 in words is "one billion, six hundred thirteen million, eight hundred eighty-five thousand, twenty".