490131681 has 8 divisors (see below), whose sum is σ = 703778880. Its totient is φ = 301619472.

The previous prime is 490131659. The next prime is 490131739. The reversal of 490131681 is 186131094.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 490131681 - 2⁷ = 490131553 is a prime.

It is a super-2 number, since 2×490131681² = 480458129439771522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (490132681) 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, 6283701 + ... + 6283778.

It is an arithmetic number, because the mean of its divisors is an integer number (87972360).

Almost surely, 2^490131681 is an apocalyptic number.

It is an amenable number.

490131681 is a deficient number, since it is larger than the sum of its proper divisors (213647199).

490131681 is a wasteful number, since it uses less digits than its factorization.

490131681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12567495.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 490131681 is about 22138.9177919789. The cubic root of 490131681 is about 788.4441316268. Note that the first 3 decimals are identical.

The spelling of 490131681 in words is "four hundred ninety million, one hundred thirty-one thousand, six hundred eighty-one".