916313640 has 128 divisors (see below), whose sum is σ = 3024155520. Its totient is φ = 222097920.

The previous prime is 916313611. The next prime is 916313659. The reversal of 916313640 is 46313619.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 156852 + ... + 162588.

It is an arithmetic number, because the mean of its divisors is an integer number (23626215).

Almost surely, 2^916313640 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 916313640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1512077760).

916313640 is an abundant number, since it is smaller than the sum of its proper divisors (2107841880).

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

916313640 is a wasteful number, since it uses less digits than its factorization.

916313640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5784 (or 5758 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 916313640 is about 30270.6729360284. The cubic root of 916313640 is about 971.2880610332.

The spelling of 916313640 in words is "nine hundred sixteen million, three hundred thirteen thousand, six hundred forty".