18239196 has 48 divisors (see below), whose sum is σ = 44158464. Its totient is φ = 5855616.

The previous prime is 18239171. The next prime is 18239197. The reversal of 18239196 is 69193281.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18239197) 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 15 ways as a sum of consecutive naturals, for example, 40951 + ... + 41393.

It is an arithmetic number, because the mean of its divisors is an integer number (919968).

Almost surely, 2^18239196 is an apocalyptic number.

It is an amenable number.

18239196 is an abundant number, since it is smaller than the sum of its proper divisors (25919268).

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

18239196 is a wasteful number, since it uses less digits than its factorization.

18239196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570 (or 568 counting only the distinct ones).

The product of its digits is 23328, while the sum is 39.

The square root of 18239196 is about 4270.7371729012. The cubic root of 18239196 is about 263.2299068636.

The spelling of 18239196 in words is "eighteen million, two hundred thirty-nine thousand, one hundred ninety-six".