491630694 has 16 divisors (see below), whose sum is σ = 988204800. Its totient is φ = 163053000.

The previous prime is 491630683. The next prime is 491630743. The reversal of 491630694 is 496036194.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204682 + ... + 207069.

It is an arithmetic number, because the mean of its divisors is an integer number (61762800).

Almost surely, 2^491630694 is an apocalyptic number.

491630694 is an abundant number, since it is smaller than the sum of its proper divisors (496574106).

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

491630694 is a wasteful number, since it uses less digits than its factorization.

491630694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411955.

The product of its (nonzero) digits is 139968, while the sum is 42.

The square root of 491630694 is about 22172.7466498853. The cubic root of 491630694 is about 789.2471030193.

The spelling of 491630694 in words is "four hundred ninety-one million, six hundred thirty thousand, six hundred ninety-four".