18382093 has 4 divisors (see below), whose sum is σ = 18603648. Its totient is φ = 18160540.

The previous prime is 18382079. The next prime is 18382097. The reversal of 18382093 is 39028381.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39028381 = 7 ⋅5575483.

It is a cyclic number.

It is not a de Polignac number, because 18382093 - 2⁵ = 18382061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18382097) 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, 110653 + ... + 110818.

It is an arithmetic number, because the mean of its divisors is an integer number (4650912).

Almost surely, 2^18382093 is an apocalyptic number.

It is an amenable number.

18382093 is a deficient number, since it is larger than the sum of its proper divisors (221555).

18382093 is an equidigital number, since it uses as much as digits as its factorization.

18382093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221554.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 18382093 is about 4287.4343143656. The cubic root of 18382093 is about 263.9155539904.

The spelling of 18382093 in words is "eighteen million, three hundred eighty-two thousand, ninety-three".