3161046640 has 80 divisors (see below), whose sum is σ = 7822722528. Its totient is φ = 1183776768.

The previous prime is 3161046611. The next prime is 3161046673. The reversal of 3161046640 is 466401613.

It is a tau number, because it is divible by the number of its divisors (80).

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, 256459 + ... + 268501.

Almost surely, 2^3161046640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3161046640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3911361264).

3161046640 is an abundant number, since it is smaller than the sum of its proper divisors (4661675888).

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

3161046640 is a wasteful number, since it uses less digits than its factorization.

3161046640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12266 (or 12260 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 3161046640 is about 56223.1859645111. The cubic root of 3161046640 is about 1467.6087799198.

The spelling of 3161046640 in words is "three billion, one hundred sixty-one million, forty-six thousand, six hundred forty".