18056983 has 8 divisors (see below), whose sum is σ = 20753280. Its totient is φ = 15389880.

The previous prime is 18056981. The next prime is 18056989. The reversal of 18056983 is 38965081.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18056983 - 2¹ = 18056981 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 (18056981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5953 + ... + 8458.

It is an arithmetic number, because the mean of its divisors is an integer number (2594160).

Almost surely, 2^18056983 is an apocalyptic number.

18056983 is a deficient number, since it is larger than the sum of its proper divisors (2696297).

18056983 is a wasteful number, since it uses less digits than its factorization.

18056983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14597.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 18056983 is about 4249.3508916069. The cubic root of 18056983 is about 262.3503994139.

The spelling of 18056983 in words is "eighteen million, fifty-six thousand, nine hundred eighty-three".