491045874 has 16 divisors (see below), whose sum is σ = 1071372960. Its totient is φ = 148801760.

The previous prime is 491045851. The next prime is 491045887. The reversal of 491045874 is 478540194.

It is a super-2 number, since 2×491045874² = 482252100744847752, which contains 22 as substring.

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, 3719979 + ... + 3720110.

It is an arithmetic number, because the mean of its divisors is an integer number (66960810).

Almost surely, 2^491045874 is an apocalyptic number.

491045874 is an abundant number, since it is smaller than the sum of its proper divisors (580327086).

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

491045874 is a wasteful number, since it uses less digits than its factorization.

491045874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7440105.

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 491045874 is about 22159.5549143028. The cubic root of 491045874 is about 788.9340288379.

The spelling of 491045874 in words is "four hundred ninety-one million, forty-five thousand, eight hundred seventy-four".