18342190 has 16 divisors (see below), whose sum is σ = 33067440. Its totient is φ = 7325440.

The previous prime is 18342179. The next prime is 18342217. The reversal of 18342190 is 9124381.

It is a happy number.

It is a super-2 number, since 2×18342190² = 672871867992200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8766 + ... + 10654.

It is an arithmetic number, because the mean of its divisors is an integer number (2066715).

Almost surely, 2^18342190 is an apocalyptic number.

18342190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18342190 is a deficient number, since it is larger than the sum of its proper divisors (14725250).

18342190 is a wasteful number, since it uses less digits than its factorization.

18342190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2867.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 18342190 is about 4282.7783038584. The cubic root of 18342190 is about 263.7244504050.

The spelling of 18342190 in words is "eighteen million, three hundred forty-two thousand, one hundred ninety".