163716138 has 24 divisors (see below), whose sum is σ = 355165668. Its totient is φ = 54503232.

The previous prime is 163716109. The next prime is 163716143. The reversal of 163716138 is 831617361.

163716138 is a `hidden beast` number, since 1 + 6 + 37 + 1 + 613 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 107060409 + 56655729 = 10347^2 + 7527^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10120 + ... + 20732.

Almost surely, 2^163716138 is an apocalyptic number.

163716138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

163716138 is an abundant number, since it is smaller than the sum of its proper divisors (191449530).

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

163716138 is a wasteful number, since it uses less digits than its factorization.

163716138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11478 (or 11475 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 163716138 is about 12795.1607258369. The cubic root of 163716138 is about 547.0543768711.

The spelling of 163716138 in words is "one hundred sixty-three million, seven hundred sixteen thousand, one hundred thirty-eight".