18930146 has 8 divisors (see below), whose sum is σ = 30065580. Its totient is φ = 8908288.

The previous prime is 18930133. The next prime is 18930161. The reversal of 18930146 is 64103981.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17850625 + 1079521 = 4225^2 + 1039^2 .

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

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 in 3 ways as a sum of consecutive naturals, for example, 278351 + ... + 278418.

Almost surely, 2^18930146 is an apocalyptic number.

18930146 is a deficient number, since it is larger than the sum of its proper divisors (11135434).

18930146 is a wasteful number, since it uses less digits than its factorization.

18930146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556788.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 18930146 is about 4350.8787618135. The cubic root of 18930146 is about 266.5127483292.

The spelling of 18930146 in words is "eighteen million, nine hundred thirty thousand, one hundred forty-six".