18316536 has 64 divisors (see below), whose sum is σ = 54036480. Its totient is φ = 5063040.

The previous prime is 18316499. The next prime is 18316537. The reversal of 18316536 is 63561381.

It is a junction number, because it is equal to n+sod(n) for n = 18316497 and 18316506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18316537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3450 + ... + 6966.

It is an arithmetic number, because the mean of its divisors is an integer number (844320).

Almost surely, 2^18316536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18316536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27018240).

18316536 is an abundant number, since it is smaller than the sum of its proper divisors (35719944).

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

18316536 is a wasteful number, since it uses less digits than its factorization.

18316536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3564 (or 3560 counting only the distinct ones).

The product of its digits is 12960, while the sum is 33.

The square root of 18316536 is about 4279.7822374509. The cubic root of 18316536 is about 263.6014417622.

The spelling of 18316536 in words is "eighteen million, three hundred sixteen thousand, five hundred thirty-six".