18119169 has 6 divisors (see below), whose sum is σ = 26172146. Its totient is φ = 12079440.

The previous prime is 18119117. The next prime is 18119177. The reversal of 18119169 is 96191181.

It can be written as a sum of positive squares in only one way, i.e., 17740944 + 378225 = 4212^2 + 615^2 .

It is not a de Polignac number, because 18119169 - 2⁷ = 18119041 is a prime.

It is a super-2 number, since 2×18119169² = 656608570501122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18119069) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1006612 + ... + 1006629.

Almost surely, 2^18119169 is an apocalyptic number.

It is an amenable number.

18119169 is a deficient number, since it is larger than the sum of its proper divisors (8052977).

18119169 is a wasteful number, since it uses less digits than its factorization.

18119169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2013247 (or 2013244 counting only the distinct ones).

The product of its digits is 3888, while the sum is 36.

The square root of 18119169 is about 4256.6617201746. The cubic root of 18119169 is about 262.6512217106.

The spelling of 18119169 in words is "eighteen million, one hundred nineteen thousand, one hundred sixty-nine".