18169946 has 8 divisors (see below), whose sum is σ = 27311904. Its totient is φ = 9065980.

The previous prime is 18169927. The next prime is 18169967. The reversal of 18169946 is 64996181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 18169897 and 18169906.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8270 + ... + 10233.

It is an arithmetic number, because the mean of its divisors is an integer number (3413988).

Almost surely, 2^18169946 is an apocalyptic number.

18169946 is a deficient number, since it is larger than the sum of its proper divisors (9141958).

18169946 is a wasteful number, since it uses less digits than its factorization.

18169946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18996.

The product of its digits is 93312, while the sum is 44.

The square root of 18169946 is about 4262.6219630645. The cubic root of 18169946 is about 262.8963433694.

The spelling of 18169946 in words is "eighteen million, one hundred sixty-nine thousand, nine hundred forty-six".