493638163902 has 48 divisors (see below), whose sum is σ = 1152083591568. Its totient is φ = 151854220800.

The previous prime is 493638163877. The next prime is 493638163957. The reversal of 493638163902 is 209361836394.

493638163902 is a `hidden beast` number, since 493 + 6 + 3 + 8 + 1 + 63 + 90 + 2 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 804558 + ... + 1278510.

It is an arithmetic number, because the mean of its divisors is an integer number (24001741491).

Almost surely, 2^493638163902 is an apocalyptic number.

493638163902 is an abundant number, since it is smaller than the sum of its proper divisors (658445427666).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

493638163902 is a wasteful number, since it uses less digits than its factorization.

493638163902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478425 (or 478422 counting only the distinct ones).

The product of its (nonzero) digits is 5038848, while the sum is 54.

The spelling of 493638163902 in words is "four hundred ninety-three billion, six hundred thirty-eight million, one hundred sixty-three thousand, nine hundred two".