18301099 has 4 divisors (see below), whose sum is σ = 18482400. Its totient is φ = 18119800.

The previous prime is 18301069. The next prime is 18301109. The reversal of 18301099 is 99010381.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18301099 - 2¹¹ = 18299051 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18301099.

It is not an unprimeable number, because it can be changed into a prime (18301069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90499 + ... + 90700.

It is an arithmetic number, because the mean of its divisors is an integer number (4620600).

Almost surely, 2^18301099 is an apocalyptic number.

18301099 is a deficient number, since it is larger than the sum of its proper divisors (181301).

18301099 is a wasteful number, since it uses less digits than its factorization.

18301099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181300.

The product of its (nonzero) digits is 1944, while the sum is 31.

The square root of 18301099 is about 4277.9783776920. The cubic root of 18301099 is about 263.5273673637.

The spelling of 18301099 in words is "eighteen million, three hundred one thousand, ninety-nine".