491063694 has 32 divisors (see below), whose sum is σ = 1072206720. Its totient is φ = 148696800.

The previous prime is 491063689. The next prime is 491063701. The reversal of 491063694 is 496360194.

It is a super-2 number, since 2×491063694² = 482287103129851272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152784 + ... + 155964.

It is an arithmetic number, because the mean of its divisors is an integer number (33506460).

Almost surely, 2^491063694 is an apocalyptic number.

491063694 is an abundant number, since it is smaller than the sum of its proper divisors (581143026).

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

491063694 is a wasteful number, since it uses less digits than its factorization.

491063694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5536.

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

The square root of 491063694 is about 22159.9569945431. The cubic root of 491063694 is about 788.9435721651.

The spelling of 491063694 in words is "four hundred ninety-one million, sixty-three thousand, six hundred ninety-four".