18250385 has 8 divisors (see below), whose sum is σ = 22852800. Its totient is φ = 13965424.

The previous prime is 18250381. The next prime is 18250399. The reversal of 18250385 is 58305281.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18250385 - 2² = 18250381 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18250381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79235 + ... + 79464.

It is an arithmetic number, because the mean of its divisors is an integer number (2856600).

Almost surely, 2^18250385 is an apocalyptic number.

It is an amenable number.

18250385 is a deficient number, since it is larger than the sum of its proper divisors (4602415).

18250385 is a wasteful number, since it uses less digits than its factorization.

18250385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158727.

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 18250385 is about 4272.0469332628. The cubic root of 18250385 is about 263.2837227841.

The spelling of 18250385 in words is "eighteen million, two hundred fifty thousand, three hundred eighty-five".