18930170 has 32 divisors (see below), whose sum is σ = 39744000. Its totient is φ = 6489168.

The previous prime is 18930167. The next prime is 18930193. The reversal of 18930170 is 7103981.

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 15 ways as a sum of consecutive naturals, for example, 671 + ... + 6189.

It is an arithmetic number, because the mean of its divisors is an integer number (1242000).

Almost surely, 2^18930170 is an apocalyptic number.

18930170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18930170 is an abundant number, since it is smaller than the sum of its proper divisors (20813830).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18930170 is an equidigital number, since it uses as much as digits as its factorization.

18930170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5547 (or 5533 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 18930170 is about 4350.8815198762. The cubic root of 18930170 is about 266.5128609591.

The spelling of 18930170 in words is "eighteen million, nine hundred thirty thousand, one hundred seventy".