18244998 has 24 divisors (see below), whose sum is σ = 39904488. Its totient is φ = 6024192.

The previous prime is 18244991. The next prime is 18244999. The reversal of 18244998 is 89944281.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18244991) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 2811 + ... + 6662.

It is an arithmetic number, because the mean of its divisors is an integer number (1662687).

Almost surely, 2^18244998 is an apocalyptic number.

18244998 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

18244998 is an abundant number, since it is smaller than the sum of its proper divisors (21659490).

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

18244998 is a wasteful number, since it uses less digits than its factorization.

18244998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9588 (or 9585 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 18244998 is about 4271.4163927203. The cubic root of 18244998 is about 263.2578155866.

The spelling of 18244998 in words is "eighteen million, two hundred forty-four thousand, nine hundred ninety-eight".