18162039 has 16 divisors (see below), whose sum is σ = 28320512. Its totient is φ = 10136448.

The previous prime is 18162037. The next prime is 18162049. The reversal of 18162039 is 93026181.

It is not a de Polignac number, because 18162039 - 2¹ = 18162037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18161997 and 18162015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18162031) 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, 9154 + ... + 10959.

It is an arithmetic number, because the mean of its divisors is an integer number (1770032).

Almost surely, 2^18162039 is an apocalyptic number.

18162039 is a deficient number, since it is larger than the sum of its proper divisors (10158473).

18162039 is a wasteful number, since it uses less digits than its factorization.

18162039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20166.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 18162039 is about 4261.6943813465. The cubic root of 18162039 is about 262.8582030434.

The spelling of 18162039 in words is "eighteen million, one hundred sixty-two thousand, thirty-nine".