490131491 has 2 divisors, whose sum is σ = 490131492. Its totient is φ = 490131490.

The previous prime is 490131461. The next prime is 490131493. The reversal of 490131491 is 194131094.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 490131491 - 2²² = 485937187 is a prime.

Together with 490131493, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (490131493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245065745 + 245065746.

It is an arithmetic number, because the mean of its divisors is an integer number (245065746).

Almost surely, 2^490131491 is an apocalyptic number.

490131491 is a deficient number, since it is larger than the sum of its proper divisors (1).

490131491 is an equidigital number, since it uses as much as digits as its factorization.

490131491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 490131491 is about 22138.9135008925. The cubic root of 490131491 is about 788.4440297464. Note that the first 3 decimals are identical.

The spelling of 490131491 in words is "four hundred ninety million, one hundred thirty-one thousand, four hundred ninety-one".