494256181 has 6 divisors (see below), whose sum is σ = 525040610. Its totient is φ = 465182016.

The previous prime is 494256179. The next prime is 494256197. The reversal of 494256181 is 181652494.

It can be written as a sum of positive squares in 3 ways, for example, as 171479025 + 322777156 = 13095^2 + 17966^2 .

It is not a de Polignac number, because 494256181 - 2¹ = 494256179 is a prime.

It is a super-2 number, since 2×494256181² = 488578344913409522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (494856181) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 854826 + ... + 855403.

Almost surely, 2^494256181 is an apocalyptic number.

It is an amenable number.

494256181 is a deficient number, since it is larger than the sum of its proper divisors (30784429).

494256181 is a wasteful number, since it uses less digits than its factorization.

494256181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1710263 (or 1710246 counting only the distinct ones).

The product of its digits is 69120, while the sum is 40.

The square root of 494256181 is about 22231.8730879789. The cubic root of 494256181 is about 790.6495651020.

The spelling of 494256181 in words is "four hundred ninety-four million, two hundred fifty-six thousand, one hundred eighty-one".