163116388 has 6 divisors (see below), whose sum is σ = 285453686. Its totient is φ = 81558192.

The previous prime is 163116347. The next prime is 163116397. The reversal of 163116388 is 883611361.

It can be written as a sum of positive squares in only one way, i.e., 105021504 + 58094884 = 10248^2 + 7622^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20389545 + ... + 20389552.

Almost surely, 2^163116388 is an apocalyptic number.

It is an amenable number.

163116388 is a deficient number, since it is larger than the sum of its proper divisors (122337298).

163116388 is a wasteful number, since it uses less digits than its factorization.

163116388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40779101 (or 40779099 counting only the distinct ones).

The product of its digits is 20736, while the sum is 37.

The square root of 163116388 is about 12771.7026272929. The cubic root of 163116388 is about 546.3855417202.

The spelling of 163116388 in words is "one hundred sixty-three million, one hundred sixteen thousand, three hundred eighty-eight".