18133798 has 16 divisors (see below), whose sum is σ = 30054240. Its totient is φ = 8162176.

The previous prime is 18133793. The next prime is 18133813. The reversal of 18133798 is 89733181.

It is a self number, because there is not a number n which added to its sum of digits gives 18133798.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18133793) 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 7 ways as a sum of consecutive naturals, for example, 10813 + ... + 12376.

It is an arithmetic number, because the mean of its divisors is an integer number (1878390).

Almost surely, 2^18133798 is an apocalyptic number.

18133798 is a deficient number, since it is larger than the sum of its proper divisors (11920442).

18133798 is a wasteful number, since it uses less digits than its factorization.

18133798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23231.

The product of its digits is 36288, while the sum is 40.

The square root of 18133798 is about 4258.3797388209. The cubic root of 18133798 is about 262.7218888793.

The spelling of 18133798 in words is "eighteen million, one hundred thirty-three thousand, seven hundred ninety-eight".