491318274 has 16 divisors (see below), whose sum is σ = 984246912. Its totient is φ = 163504368.

The previous prime is 491318273. The next prime is 491318299. The reversal of 491318274 is 472813194.

It is not an unprimeable number, because it can be changed into a prime (491318273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63114 + ... + 70469.

It is an arithmetic number, because the mean of its divisors is an integer number (61515432).

Almost surely, 2^491318274 is an apocalyptic number.

491318274 is an abundant number, since it is smaller than the sum of its proper divisors (492928638).

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

491318274 is a wasteful number, since it uses less digits than its factorization.

491318274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134201.

The product of its digits is 48384, while the sum is 39.

The square root of 491318274 is about 22165.7003949796. The cubic root of 491318274 is about 789.0798847987.

The spelling of 491318274 in words is "four hundred ninety-one million, three hundred eighteen thousand, two hundred seventy-four".