18869799 has 16 divisors (see below), whose sum is σ = 27758304. Its totient is φ = 11328000.

The previous prime is 18869797. The next prime is 18869833. The reversal of 18869799 is 99796881.

It is not a de Polignac number, because 18869799 - 2¹ = 18869797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18869791) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4302 + ... + 7499.

It is an arithmetic number, because the mean of its divisors is an integer number (1734894).

Almost surely, 2^18869799 is an apocalyptic number.

18869799 is a deficient number, since it is larger than the sum of its proper divisors (8888505).

18869799 is a wasteful number, since it uses less digits than its factorization.

18869799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11858.

The product of its digits is 1959552, while the sum is 57.

The square root of 18869799 is about 4343.9381901680. The cubic root of 18869799 is about 266.2292434611.

The spelling of 18869799 in words is "eighteen million, eight hundred sixty-nine thousand, seven hundred ninety-nine".