494788631 has 2 divisors, whose sum is σ = 494788632. Its totient is φ = 494788630.

The previous prime is 494788601. The next prime is 494788649. The reversal of 494788631 is 136887494.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 494788631 - 2²⁶ = 427679767 is a prime.

It is a super-2 number, since 2×494788631² = 489631578733708322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 494788631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (494788601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247394315 + 247394316.

It is an arithmetic number, because the mean of its divisors is an integer number (247394316).

Almost surely, 2^494788631 is an apocalyptic number.

494788631 is a deficient number, since it is larger than the sum of its proper divisors (1).

494788631 is an equidigital number, since it uses as much as digits as its factorization.

494788631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1161216, while the sum is 50.

The square root of 494788631 is about 22243.8447890647. The cubic root of 494788631 is about 790.9333789732.

The spelling of 494788631 in words is "four hundred ninety-four million, seven hundred eighty-eight thousand, six hundred thirty-one".