18885799 has 8 divisors (see below), whose sum is σ = 19502208. Its totient is φ = 18275040.

The previous prime is 18885781. The next prime is 18885833. The reversal of 18885799 is 99758881.

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

It is not a de Polignac number, because 18885799 - 2⁹ = 18885287 is a prime.

It is a super-3 number, since 3×18885799³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18885739) 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, 5994 + ... + 8584.

It is an arithmetic number, because the mean of its divisors is an integer number (2437776).

Almost surely, 2^18885799 is an apocalyptic number.

18885799 is a deficient number, since it is larger than the sum of its proper divisors (616409).

18885799 is a wasteful number, since it uses less digits than its factorization.

18885799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2825.

The product of its digits is 1451520, while the sum is 55.

The square root of 18885799 is about 4345.7794467736. The cubic root of 18885799 is about 266.3044688608.

The spelling of 18885799 in words is "eighteen million, eight hundred eighty-five thousand, seven hundred ninety-nine".