18339798 has 16 divisors (see below), whose sum is σ = 36915120. Its totient is φ = 6074016.

The previous prime is 18339793. The next prime is 18339829. The reversal of 18339798 is 89793381.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18339791) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8793 + ... + 10676.

It is an arithmetic number, because the mean of its divisors is an integer number (2307195).

Almost surely, 2^18339798 is an apocalyptic number.

18339798 is an abundant number, since it is smaller than the sum of its proper divisors (18575322).

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

18339798 is a wasteful number, since it uses less digits than its factorization.

18339798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19631.

The product of its digits is 326592, while the sum is 48.

The square root of 18339798 is about 4282.4990367775. The cubic root of 18339798 is about 263.7129858287.

The spelling of 18339798 in words is "eighteen million, three hundred thirty-nine thousand, seven hundred ninety-eight".