18098933 has 4 divisors (see below), whose sum is σ = 18231180. Its totient is φ = 17966688.

The previous prime is 18098923. The next prime is 18099007. The reversal of 18098933 is 33989081.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12909649 + 5189284 = 3593^2 + 2278^2 .

It is a cyclic number.

It is not a de Polignac number, because 18098933 - 2¹⁰ = 18097909 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 (18098923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65918 + ... + 66191.

It is an arithmetic number, because the mean of its divisors is an integer number (4557795).

Almost surely, 2^18098933 is an apocalyptic number.

It is an amenable number.

18098933 is a deficient number, since it is larger than the sum of its proper divisors (132247).

18098933 is a wasteful number, since it uses less digits than its factorization.

18098933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132246.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 18098933 is about 4254.2840760814. The cubic root of 18098933 is about 262.5534065183.

The spelling of 18098933 in words is "eighteen million, ninety-eight thousand, nine hundred thirty-three".