490131493 has 2 divisors, whose sum is σ = 490131494. Its totient is φ = 490131492.

The previous prime is 490131491. The next prime is 490131527. The reversal of 490131493 is 394131094.

It is an a-pointer prime, because the next prime (490131527) can be obtained adding 490131493 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 392951329 + 97180164 = 19823^2 + 9858^2 .

It is a cyclic number.

It is not a de Polignac number, because 490131493 - 2¹ = 490131491 is a prime.

Together with 490131491, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (490131491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245065746 + 245065747.

It is an arithmetic number, because the mean of its divisors is an integer number (245065747).

Almost surely, 2^490131493 is an apocalyptic number.

It is an amenable number.

490131493 is a deficient number, since it is larger than the sum of its proper divisors (1).

490131493 is an equidigital number, since it uses as much as digits as its factorization.

490131493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 490131493 is about 22138.9135460618. The cubic root of 490131493 is about 788.4440308188. Note that the first 3 decimals are identical.

The spelling of 490131493 in words is "four hundred ninety million, one hundred thirty-one thousand, four hundred ninety-three".