18086943 has 16 divisors (see below), whose sum is σ = 27623936. Its totient is φ = 10311840.

The previous prime is 18086941. The next prime is 18086983. The reversal of 18086943 is 34968081.

It is not a de Polignac number, because 18086943 - 2¹ = 18086941 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 (18086941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13230 + ... + 14532.

It is an arithmetic number, because the mean of its divisors is an integer number (1726496).

Almost surely, 2^18086943 is an apocalyptic number.

18086943 is a deficient number, since it is larger than the sum of its proper divisors (9536993).

18086943 is a wasteful number, since it uses less digits than its factorization.

18086943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1974.

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 18086943 is about 4252.8746748523. The cubic root of 18086943 is about 262.4954157930.

The spelling of 18086943 in words is "eighteen million, eighty-six thousand, nine hundred forty-three".