494551564 has 12 divisors (see below), whose sum is σ = 932039584. Its totient is φ = 228254544.

The previous prime is 494551537. The next prime is 494551571. The reversal of 494551564 is 465155494.

It is a self number, because there is not a number n which added to its sum of digits gives 494551564.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4755252 + ... + 4755355.

Almost surely, 2^494551564 is an apocalyptic number.

It is an amenable number.

494551564 is a deficient number, since it is larger than the sum of its proper divisors (437488020).

494551564 is a wasteful number, since it uses less digits than its factorization.

494551564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9510624 (or 9510622 counting only the distinct ones).

The product of its digits is 432000, while the sum is 43.

The square root of 494551564 is about 22238.5153281418. The cubic root of 494551564 is about 790.8070393973.

The spelling of 494551564 in words is "four hundred ninety-four million, five hundred fifty-one thousand, five hundred sixty-four".