18055965 has 8 divisors (see below), whose sum is σ = 28889568. Its totient is φ = 9629840.

The previous prime is 18055927. The next prime is 18055993. The reversal of 18055965 is 56955081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18055965 - 2⁶ = 18055901 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 601851 + ... + 601880.

It is an arithmetic number, because the mean of its divisors is an integer number (3611196).

Almost surely, 2^18055965 is an apocalyptic number.

18055965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18055965 is a deficient number, since it is larger than the sum of its proper divisors (10833603).

18055965 is a wasteful number, since it uses less digits than its factorization.

18055965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1203739.

The product of its (nonzero) digits is 54000, while the sum is 39.

The square root of 18055965 is about 4249.2311069181. The cubic root of 18055965 is about 262.3454691379.

The spelling of 18055965 in words is "eighteen million, fifty-five thousand, nine hundred sixty-five".