18865050 has 48 divisors (see below), whose sum is σ = 48306432. Its totient is φ = 4867200.

The previous prime is 18865031. The next prime is 18865097. The reversal of 18865050 is 5056881.

It is a super-2 number, since 2×18865050² = 711780223005000, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2622 + ... + 6678.

It is an arithmetic number, because the mean of its divisors is an integer number (1006384).

Almost surely, 2^18865050 is an apocalyptic number.

18865050 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 18865050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24153216).

18865050 is an abundant number, since it is smaller than the sum of its proper divisors (29441382).

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

18865050 is a wasteful number, since it uses less digits than its factorization.

18865050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4103 (or 4098 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 33.

The square root of 18865050 is about 4343.3915319713. The cubic root of 18865050 is about 266.2069074388.

The spelling of 18865050 in words is "eighteen million, eight hundred sixty-five thousand, fifty".