490315881 has 16 divisors (see below), whose sum is σ = 750723840. Its totient is φ = 281520720.

The previous prime is 490315811. The next prime is 490315883. The reversal of 490315881 is 188513094.

It is not a de Polignac number, because 490315881 - 2⁷ = 490315753 is a prime.

It is a super-2 number, since 2×490315881² = 480819326321612322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (490315883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 390375 + ... + 391628.

It is an arithmetic number, because the mean of its divisors is an integer number (46920240).

Almost surely, 2^490315881 is an apocalyptic number.

It is an amenable number.

490315881 is a deficient number, since it is larger than the sum of its proper divisors (260407959).

490315881 is a wasteful number, since it uses less digits than its factorization.

490315881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782036.

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 490315881 is about 22143.0774961386. The cubic root of 490315881 is about 788.5428895898.

The spelling of 490315881 in words is "four hundred ninety million, three hundred fifteen thousand, eight hundred eighty-one".