18098093 has 8 divisors (see below), whose sum is σ = 19551000. Its totient is φ = 16653888.

The previous prime is 18098083. The next prime is 18098123. The reversal of 18098093 is 39089081.

It can be written as a sum of positive squares in 4 ways, for example, as 1630729 + 16467364 = 1277^2 + 4058^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18098093 - 2⁴ = 18098077 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18098083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2543 + ... + 6531.

It is an arithmetic number, because the mean of its divisors is an integer number (2443875).

Almost surely, 2^18098093 is an apocalyptic number.

18098093 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

18098093 is a deficient number, since it is larger than the sum of its proper divisors (1452907).

18098093 is a wasteful number, since it uses less digits than its factorization.

18098093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4351.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 18098093 is about 4254.1853509221. The cubic root of 18098093 is about 262.5493446163.

The spelling of 18098093 in words is "eighteen million, ninety-eight thousand, ninety-three".