18245799 has 24 divisors (see below), whose sum is σ = 30964752. Its totient is φ = 10206720.

The previous prime is 18245789. The next prime is 18245863. The reversal of 18245799 is 99754281.

It is not a de Polignac number, because 18245799 - 2⁵ = 18245767 is a prime.

It is a super-2 number, since 2×18245799² = 665818362296802, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18245749) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5802 + ... + 8375.

It is an arithmetic number, because the mean of its divisors is an integer number (1290198).

Almost surely, 2^18245799 is an apocalyptic number.

18245799 is a deficient number, since it is larger than the sum of its proper divisors (12718953).

18245799 is a wasteful number, since it uses less digits than its factorization.

18245799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14207 (or 14204 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 18245799 is about 4271.5101545004. The cubic root of 18245799 is about 263.2616680840.

It can be divided in two parts, 18245 and 799, that added together give a square (19044 = 138²).

The spelling of 18245799 in words is "eighteen million, two hundred forty-five thousand, seven hundred ninety-nine".