18800289 has 16 divisors (see below), whose sum is σ = 28013440. Its totient is φ = 12461040.

The previous prime is 18800273. The next prime is 18800297. The reversal of 18800289 is 98200881.

It is not a de Polignac number, because 18800289 - 2⁴ = 18800273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18800209) 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, 2964 + ... + 6810.

It is an arithmetic number, because the mean of its divisors is an integer number (1750840).

Almost surely, 2^18800289 is an apocalyptic number.

It is an amenable number.

18800289 is a deficient number, since it is larger than the sum of its proper divisors (9213151).

18800289 is a wasteful number, since it uses less digits than its factorization.

18800289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4037 (or 4031 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The square root of 18800289 is about 4335.9300040476. The cubic root of 18800289 is about 265.9019415447.

The spelling of 18800289 in words is "eighteen million, eight hundred thousand, two hundred eighty-nine".