641156316 has 48 divisors (see below), whose sum is σ = 1534076544. Its totient is φ = 208305216.

The previous prime is 641156297. The next prime is 641156333. The reversal of 641156316 is 613651146.

641156316 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×641156316² = 822162843093383712, which contains 22 as substring.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

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, 315295 + ... + 317321.

It is an arithmetic number, because the mean of its divisors is an integer number (31959928).

Almost surely, 2^641156316 is an apocalyptic number.

It is an amenable number.

641156316 is an abundant number, since it is smaller than the sum of its proper divisors (892920228).

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

641156316 is a wasteful number, since it uses less digits than its factorization.

641156316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2690 (or 2688 counting only the distinct ones).

The product of its digits is 12960, while the sum is 33.

The square root of 641156316 is about 25321.0646695592. The cubic root of 641156316 is about 862.2925652800.

The spelling of 641156316 in words is "six hundred forty-one million, one hundred fifty-six thousand, three hundred sixteen".