491048874 has 12 divisors (see below), whose sum is σ = 1063939266. Its totient is φ = 163682952.

The previous prime is 491048861. The next prime is 491048879. The reversal of 491048874 is 478840194.

It can be written as a sum of positive squares in only one way, i.e., 365765625 + 125283249 = 19125^2 + 11193^2 .

It is a super-2 number, since 2×491048874² = 482257993313335752, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (491048879) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13640229 + ... + 13640264.

Almost surely, 2^491048874 is an apocalyptic number.

491048874 is an abundant number, since it is smaller than the sum of its proper divisors (572890392).

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

491048874 is a wasteful number, since it uses less digits than its factorization.

491048874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27280501 (or 27280498 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The square root of 491048874 is about 22159.6226050896. The cubic root of 491048874 is about 788.9356354748.

The spelling of 491048874 in words is "four hundred ninety-one million, forty-eight thousand, eight hundred seventy-four".