18009196 has 12 divisors (see below), whose sum is σ = 31559920. Its totient is φ = 8992080.

The previous prime is 18009191. The next prime is 18009197. The reversal of 18009196 is 69190081.

It is a super-2 number, since 2×18009196² = 648662281132832, which contains 22 as substring.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (18009191) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 601 + ... + 6031.

Almost surely, 2^18009196 is an apocalyptic number.

It is an amenable number.

18009196 is a deficient number, since it is larger than the sum of its proper divisors (13550724).

18009196 is a wasteful number, since it uses less digits than its factorization.

18009196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6264 (or 6262 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 34.

The square root of 18009196 is about 4243.7243077278. The cubic root of 18009196 is about 262.1187620780.

The spelling of 18009196 in words is "eighteen million, nine thousand, one hundred ninety-six".