18274799 has 2 divisors, whose sum is σ = 18274800. Its totient is φ = 18274798.

The previous prime is 18274793. The next prime is 18274819. The reversal of 18274799 is 99747281.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18274799 - 2⁴ = 18274783 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18274793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9137399 + 9137400.

It is an arithmetic number, because the mean of its divisors is an integer number (9137400).

Almost surely, 2^18274799 is an apocalyptic number.

18274799 is a deficient number, since it is larger than the sum of its proper divisors (1).

18274799 is an equidigital number, since it uses as much as digits as its factorization.

18274799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 47.

The square root of 18274799 is about 4274.9033907212. The cubic root of 18274799 is about 263.4010708970.

The spelling of 18274799 in words is "eighteen million, two hundred seventy-four thousand, seven hundred ninety-nine".