163366138 has 16 divisors (see below), whose sum is σ = 264143880. Its totient is φ = 75329856.

The previous prime is 163366129. The next prime is 163366169. The reversal of 163366138 is 831663361.

It can be written as a sum of positive squares in 4 ways, for example, as 69605649 + 93760489 = 8343^2 + 9683^2 .

It is a junction number, because it is equal to n+sod(n) for n = 163366097 and 163366106.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34956 + ... + 39352.

Almost surely, 2^163366138 is an apocalyptic number.

163366138 is a deficient number, since it is larger than the sum of its proper divisors (100777742).

163366138 is a wasteful number, since it uses less digits than its factorization.

163366138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5841.

The product of its digits is 46656, while the sum is 37.

The square root of 163366138 is about 12781.4763622987. The cubic root of 163366138 is about 546.6642592762.

The spelling of 163366138 in words is "one hundred sixty-three million, three hundred sixty-six thousand, one hundred thirty-eight".