494121537 has 72 divisors (see below), whose sum is σ = 906272640. Its totient is φ = 257100480.

The previous prime is 494121521. The next prime is 494121539. The reversal of 494121537 is 735121494.

494121537 is a `hidden beast` number, since 494 + 12 + 153 + 7 = 666.

It is not a de Polignac number, because 494121537 - 2⁴ = 494121521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (494121539) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 452362 + ... + 453452.

It is an arithmetic number, because the mean of its divisors is an integer number (12587120).

Almost surely, 2^494121537 is an apocalyptic number.

It is an amenable number.

494121537 is a deficient number, since it is larger than the sum of its proper divisors (412151103).

494121537 is a wasteful number, since it uses less digits than its factorization.

494121537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1203 (or 1193 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 494121537 is about 22228.8447068218. The cubic root of 494121537 is about 790.5777630066.

The spelling of 494121537 in words is "four hundred ninety-four million, one hundred twenty-one thousand, five hundred thirty-seven".