18339036 has 12 divisors (see below), whose sum is σ = 42791112. Its totient is φ = 6113008.

The previous prime is 18339023. The next prime is 18339037. The reversal of 18339036 is 63093381.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 18338988 and 18339006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18339037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 764115 + ... + 764138.

It is an arithmetic number, because the mean of its divisors is an integer number (3565926).

Almost surely, 2^18339036 is an apocalyptic number.

It is an amenable number.

18339036 is an abundant number, since it is smaller than the sum of its proper divisors (24452076).

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

18339036 is a wasteful number, since it uses less digits than its factorization.

18339036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1528260 (or 1528258 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 18339036 is about 4282.4100691083. The cubic root of 18339036 is about 263.7093334425.

The spelling of 18339036 in words is "eighteen million, three hundred thirty-nine thousand, thirty-six".