3161002500 has 180 divisors, whose sum is σ = 10257251004. Its totient is φ = 819936000.

The previous prime is 3161002487. The next prime is 3161002501. The reversal of 3161002500 is 52001613.

3161002500 is a `hidden beast` number, since 3 + 1 + 610 + 0 + 2 + 50 + 0 = 666.

It can be written as a sum of positive squares in 10 ways, for example, as 2695478724 + 465523776 = 51918^2 + 21576^2 .

It is a tau number, because it is divible by the number of its divisors (180).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (3161002501) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 830602 + ... + 834398.

Almost surely, 2^3161002500 is an apocalyptic number.

3161002500 is a gapful number since it is divisible by the number (30) 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 3161002500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5128625502).

3161002500 is an abundant number, since it is smaller than the sum of its proper divisors (7096248504).

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

3161002500 is a wasteful number, since it uses less digits than its factorization.

3161002500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3864 (or 3844 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 3161002500 is about 56222.7934204625. The cubic root of 3161002500 is about 1467.6019487907.

The spelling of 3161002500 in words is "three billion, one hundred sixty-one million, two thousand, five hundred".