18093843 has 12 divisors (see below), whose sum is σ = 26180128. Its totient is φ = 12042000.

The previous prime is 18093827. The next prime is 18093931. The reversal of 18093843 is 34839081.

It is not a de Polignac number, because 18093843 - 2⁴ = 18093827 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18093798 and 18093807.

It is not an unprimeable number, because it can be changed into a prime (18093343) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5421 + ... + 8097.

Almost surely, 2^18093843 is an apocalyptic number.

18093843 is a deficient number, since it is larger than the sum of its proper divisors (8086285).

18093843 is a wasteful number, since it uses less digits than its factorization.

18093843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3434 (or 3431 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 18093843 is about 4253.6858135034. The cubic root of 18093843 is about 262.5287913998.

The spelling of 18093843 in words is "eighteen million, ninety-three thousand, eight hundred forty-three".