18196168 has 8 divisors (see below), whose sum is σ = 34117830. Its totient is φ = 9098080.

The previous prime is 18196141. The next prime is 18196183. The reversal of 18196168 is 86169181.

It can be written as a sum of positive squares in only one way, i.e., 14424804 + 3771364 = 3798^2 + 1942^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×18196168² = 662201059768448, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18196168.

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 as a sum of consecutive naturals, namely, 1137253 + ... + 1137268.

Almost surely, 2^18196168 is an apocalyptic number.

It is an amenable number.

18196168 is a deficient number, since it is larger than the sum of its proper divisors (15921662).

18196168 is a wasteful number, since it uses less digits than its factorization.

18196168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2274527 (or 2274523 counting only the distinct ones).

The product of its digits is 20736, while the sum is 40.

The square root of 18196168 is about 4265.6966605702. The cubic root of 18196168 is about 263.0227490719.

The spelling of 18196168 in words is "eighteen million, one hundred ninety-six thousand, one hundred sixty-eight".