18069944 has 8 divisors (see below), whose sum is σ = 33881160. Its totient is φ = 9034968.

The previous prime is 18069917. The next prime is 18069983. The reversal of 18069944 is 44996081.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1129364 + ... + 1129379.

It is an arithmetic number, because the mean of its divisors is an integer number (4235145).

Almost surely, 2^18069944 is an apocalyptic number.

It is an amenable number.

18069944 is a deficient number, since it is larger than the sum of its proper divisors (15811216).

18069944 is a wasteful number, since it uses less digits than its factorization.

18069944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2258749 (or 2258745 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 18069944 is about 4250.8756744934. The cubic root of 18069944 is about 262.4131546424.

The spelling of 18069944 in words is "eighteen million, sixty-nine thousand, nine hundred forty-four".