18162983 has 4 divisors (see below), whose sum is σ = 18185928. Its totient is φ = 18140040.

The previous prime is 18162979. The next prime is 18163001. The reversal of 18162983 is 38926181.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38926181 = 7 ⋅5560883.

It is a cyclic number.

It is not a de Polignac number, because 18162983 - 2² = 18162979 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 (18162913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10241 + ... + 11882.

It is an arithmetic number, because the mean of its divisors is an integer number (4546482).

Almost surely, 2^18162983 is an apocalyptic number.

18162983 is a deficient number, since it is larger than the sum of its proper divisors (22945).

18162983 is an equidigital number, since it uses as much as digits as its factorization.

18162983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22944.

The product of its digits is 20736, while the sum is 38.

The square root of 18162983 is about 4261.8051339779. The cubic root of 18162983 is about 262.8627571180.

The spelling of 18162983 in words is "eighteen million, one hundred sixty-two thousand, nine hundred eighty-three".