3161202640 has 40 divisors (see below), whose sum is σ = 7352341920. Its totient is φ = 1264043136.

The previous prime is 3161202613. The next prime is 3161202641. The reversal of 3161202640 is 462021613.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×3161202640² = 19986404262285939200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3161202641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 326347 + ... + 335893.

It is an arithmetic number, because the mean of its divisors is an integer number (183808548).

Almost surely, 2^3161202640 is an apocalyptic number.

It is an amenable number.

3161202640 is an abundant number, since it is smaller than the sum of its proper divisors (4191139280).

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

3161202640 is a wasteful number, since it uses less digits than its factorization.

3161202640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13699 (or 13693 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 3161202640 is about 56224.5732753927. The cubic root of 3161202640 is about 1467.6329220505.

The spelling of 3161202640 in words is "three billion, one hundred sixty-one million, two hundred two thousand, six hundred forty".