18361244 has 24 divisors (see below), whose sum is σ = 35633136. Its totient is φ = 8208000.

The previous prime is 18361243. The next prime is 18361247. The reversal of 18361244 is 44216381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18361243) 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 7 ways as a sum of consecutive naturals, for example, 737 + ... + 6104.

It is an arithmetic number, because the mean of its divisors is an integer number (1484714).

Almost surely, 2^18361244 is an apocalyptic number.

It is an amenable number.

18361244 is a deficient number, since it is larger than the sum of its proper divisors (17271892).

18361244 is a wasteful number, since it uses less digits than its factorization.

18361244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6917 (or 6915 counting only the distinct ones).

The product of its digits is 4608, while the sum is 29.

The square root of 18361244 is about 4285.0022170356. The cubic root of 18361244 is about 263.8157384260.

The spelling of 18361244 in words is "eighteen million, three hundred sixty-one thousand, two hundred forty-four".