18160943 has 4 divisors (see below), whose sum is σ = 18176928. Its totient is φ = 18144960.

The previous prime is 18160907. The next prime is 18160949. The reversal of 18160943 is 34906181.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 18160943 - 2¹² = 18156847 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 (18160949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6146 + ... + 8607.

It is an arithmetic number, because the mean of its divisors is an integer number (4544232).

Almost surely, 2^18160943 is an apocalyptic number.

18160943 is a deficient number, since it is larger than the sum of its proper divisors (15985).

18160943 is a wasteful number, since it uses less digits than its factorization.

18160943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15984.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 18160943 is about 4261.5657920534. The cubic root of 18160943 is about 262.8529154875.

The spelling of 18160943 in words is "eighteen million, one hundred sixty thousand, nine hundred forty-three".