916280643 has 8 divisors (see below), whose sum is σ = 1286008000. Its totient is φ = 578703528.

The previous prime is 916280641. The next prime is 916280653. The reversal of 916280643 is 346082619.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 916280643 - 2¹ = 916280641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (916280641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8037493 + ... + 8037606.

It is an arithmetic number, because the mean of its divisors is an integer number (160751000).

Almost surely, 2^916280643 is an apocalyptic number.

916280643 is a deficient number, since it is larger than the sum of its proper divisors (369727357).

916280643 is a wasteful number, since it uses less digits than its factorization.

916280643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16075121.

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 916280643 is about 30270.1278986396. The cubic root of 916280643 is about 971.2764020060.

The spelling of 916280643 in words is "nine hundred sixteen million, two hundred eighty thousand, six hundred forty-three".