18364950 has 72 divisors (see below), whose sum is σ = 50719968. Its totient is φ = 4760640.

The previous prime is 18364943. The next prime is 18364961. The reversal of 18364950 is 5946381.

18364950 is a `hidden beast` number, since 1 + 8 + 3 + 649 + 5 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 16099 + ... + 17201.

It is an arithmetic number, because the mean of its divisors is an integer number (704444).

Almost surely, 2^18364950 is an apocalyptic number.

18364950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18364950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25359984).

18364950 is an abundant number, since it is smaller than the sum of its proper divisors (32355018).

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

18364950 is a wasteful number, since it uses less digits than its factorization.

18364950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158 (or 1150 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 18364950 is about 4285.4346337332. The cubic root of 18364950 is about 263.8334865944.

It can be divided in two parts, 1836 and 4950, that added together give a triangular number (6786 = T₁₁₆).

The spelling of 18364950 in words is "eighteen million, three hundred sixty-four thousand, nine hundred fifty".