18369850 has 12 divisors (see below), whose sum is σ = 34168014. Its totient is φ = 7347920.

The previous prime is 18369821. The next prime is 18369899. The reversal of 18369850 is 5896381.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 10569001 + 7800849 = 3251^2 + 2793^2 .

It is an alternating number because its digits alternate between odd and even.

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 5 ways as a sum of consecutive naturals, for example, 183649 + ... + 183748.

Almost surely, 2^18369850 is an apocalyptic number.

18369850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18369850 is a deficient number, since it is larger than the sum of its proper divisors (15798164).

18369850 is a wasteful number, since it uses less digits than its factorization.

18369850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367409 (or 367404 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 18369850 is about 4286.0062995754. The cubic root of 18369850 is about 263.8569492071.

The spelling of 18369850 in words is "eighteen million, three hundred sixty-nine thousand, eight hundred fifty".