18339898 has 8 divisors (see below), whose sum is σ = 27556992. Its totient is φ = 9154236.

The previous prime is 18339857. The next prime is 18339899. The reversal of 18339898 is 89893381.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (18339899) 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 3 ways as a sum of consecutive naturals, for example, 6340 + ... + 8767.

It is an arithmetic number, because the mean of its divisors is an integer number (3444624).

Almost surely, 2^18339898 is an apocalyptic number.

18339898 is a deficient number, since it is larger than the sum of its proper divisors (9217094).

18339898 is a wasteful number, since it uses less digits than its factorization.

18339898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15716.

The product of its digits is 373248, while the sum is 49.

The square root of 18339898 is about 4282.5107121874. The cubic root of 18339898 is about 263.7134651370.

The spelling of 18339898 in words is "eighteen million, three hundred thirty-nine thousand, eight hundred ninety-eight".