18662364 has 72 divisors (see below), whose sum is σ = 54512640. Its totient is φ = 5272992.

The previous prime is 18662363. The next prime is 18662383. The reversal of 18662364 is 46326681.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18662363) 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 23 ways as a sum of consecutive naturals, for example, 25597 + ... + 26315.

It is an arithmetic number, because the mean of its divisors is an integer number (757120).

Almost surely, 2^18662364 is an apocalyptic number.

18662364 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18662364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27256320).

18662364 is an abundant number, since it is smaller than the sum of its proper divisors (35850276).

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

18662364 is a wasteful number, since it uses less digits than its factorization.

18662364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 839 (or 834 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 18662364 is about 4319.9958333313. The cubic root of 18662364 is about 265.2500973450.

Adding to 18662364 its sum of digits (36), we get a square (18662400 = 4320²).

The spelling of 18662364 in words is "eighteen million, six hundred sixty-two thousand, three hundred sixty-four".