491785294 has 64 divisors (see below), whose sum is σ = 1006935552. Its totient is φ = 173923200.

The previous prime is 491785289. The next prime is 491785309. The reversal of 491785294 is 492587194.

It is a congruent number.

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, 120109 + ... + 124135.

It is an arithmetic number, because the mean of its divisors is an integer number (15733368).

Almost surely, 2^491785294 is an apocalyptic number.

491785294 is an abundant number, since it is smaller than the sum of its proper divisors (515150258).

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

491785294 is a wasteful number, since it uses less digits than its factorization.

491785294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4121.

The product of its digits is 725760, while the sum is 49.

The square root of 491785294 is about 22176.2326376686. The cubic root of 491785294 is about 789.3298242000.

The spelling of 491785294 in words is "four hundred ninety-one million, seven hundred eighty-five thousand, two hundred ninety-four".