18244995 has 16 divisors (see below), whose sum is σ = 30909600. Its totient is φ = 9158144.

The previous prime is 18244991. The next prime is 18244999. The reversal of 18244995 is 59944281.

It is an interprime number because it is at equal distance from previous prime (18244991) and next prime (18244999).

It is a cyclic number.

It is not a de Polignac number, because 18244995 - 2² = 18244991 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (18244991) 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 15 ways as a sum of consecutive naturals, for example, 35520 + ... + 36029.

It is an arithmetic number, because the mean of its divisors is an integer number (1931850).

Almost surely, 2^18244995 is an apocalyptic number.

18244995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18244995 is a deficient number, since it is larger than the sum of its proper divisors (12664605).

18244995 is a wasteful number, since it uses less digits than its factorization.

18244995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71574.

The product of its digits is 103680, while the sum is 42.

The square root of 18244995 is about 4271.4160415488. The cubic root of 18244995 is about 263.2578011575.

The spelling of 18244995 in words is "eighteen million, two hundred forty-four thousand, nine hundred ninety-five".