18113850 has 36 divisors (see below), whose sum is σ = 48667086. Its totient is φ = 4830240.

The previous prime is 18113839. The next prime is 18113881. The reversal of 18113850 is 5831181.

It can be written as a sum of positive squares in 3 ways, for example, as 16184529 + 1929321 = 4023^2 + 1389^2 .

It is a super-2 number, since 2×18113850² = 656223123645000, which contains 22 as substring.

It is a Curzon number.

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 17 ways as a sum of consecutive naturals, for example, 19677 + ... + 20576.

Almost surely, 2^18113850 is an apocalyptic number.

18113850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18113850 is an abundant number, since it is smaller than the sum of its proper divisors (30553236).

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

18113850 is a wasteful number, since it uses less digits than its factorization.

18113850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40271 (or 40263 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 27.

The square root of 18113850 is about 4256.0368889379. The cubic root of 18113850 is about 262.6255182034.

It can be divided in two parts, 18 and 113850, that multiplied together give a triangular number (2049300 = T₂₀₂₄).

The spelling of 18113850 in words is "eighteen million, one hundred thirteen thousand, eight hundred fifty".