18162044 has 12 divisors (see below), whose sum is σ = 31816344. Its totient is φ = 9071664.

The previous prime is 18162037. The next prime is 18162049. The reversal of 18162044 is 44026181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18162049) 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, 3839 + ... + 7145.

It is an arithmetic number, because the mean of its divisors is an integer number (2651362).

Almost surely, 2^18162044 is an apocalyptic number.

It is an amenable number.

18162044 is a deficient number, since it is larger than the sum of its proper divisors (13654300).

18162044 is a wasteful number, since it uses less digits than its factorization.

18162044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4684 (or 4682 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 18162044 is about 4261.6949679676. The cubic root of 18162044 is about 262.8582271649.

The spelling of 18162044 in words is "eighteen million, one hundred sixty-two thousand, forty-four".