18995 has 8 divisors (see below), whose sum is σ = 23760. Its totient is φ = 14560.

The previous prime is 18979. The next prime is 19001. The reversal of 18995 is 59981.

18995 is an esthetic number in base 12, because in such base its adjacent digits differ by 1.

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

It is not a de Polignac number, because 18995 - 2⁴ = 18979 is a prime.

18995 is an undulating number in base 12.

It is a nialpdrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80 + ... + 210.

It is an arithmetic number, because the mean of its divisors is an integer number (2970).

2¹⁸⁹⁹⁵ is an apocalyptic number.

18995 is a deficient number, since it is larger than the sum of its proper divisors (4765).

18995 is a wasteful number, since it uses less digits than its factorization.

18995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165.

The product of its digits is 3240, while the sum is 32.

The square root of 18995 is about 137.8223494213. The cubic root of 18995 is about 26.6816755787.

It can be divided in two parts, 189 and 95, that multiplied together give a triangular number (17955 = T₁₈₉).

The spelling of 18995 in words is "eighteen thousand, nine hundred ninety-five".