18230190 has 32 divisors (see below), whose sum is σ = 47730816. Its totient is φ = 4419360.

The previous prime is 18230161. The next prime is 18230207. The reversal of 18230190 is 9103281.

It is a super-2 number, since 2×18230190² = 664679654872200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18230190.

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 15 ways as a sum of consecutive naturals, for example, 27292 + ... + 27951.

It is an arithmetic number, because the mean of its divisors is an integer number (1491588).

Almost surely, 2^18230190 is an apocalyptic number.

18230190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18230190 is an abundant number, since it is smaller than the sum of its proper divisors (29500626).

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

18230190 is a wasteful number, since it uses less digits than its factorization.

18230190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55264.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 18230190 is about 4269.6826579970. The cubic root of 18230190 is about 263.1865745655.

The spelling of 18230190 in words is "eighteen million, two hundred thirty thousand, one hundred ninety".