18035838 has 16 divisors (see below), whose sum is σ = 40079760. Its totient is φ = 6011928.

The previous prime is 18035821. The next prime is 18035839. The reversal of 18035838 is 83853081.

It is a happy number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18035839) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 166945 + ... + 167052.

It is an arithmetic number, because the mean of its divisors is an integer number (2504985).

Almost surely, 2^18035838 is an apocalyptic number.

18035838 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

18035838 is an abundant number, since it is smaller than the sum of its proper divisors (22043922).

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

18035838 is a wasteful number, since it uses less digits than its factorization.

18035838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334008 (or 334002 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 18035838 is about 4246.8621357421. The cubic root of 18035838 is about 262.2479539875.

The spelling of 18035838 in words is "eighteen million, thirty-five thousand, eight hundred thirty-eight".