19895 has 8 divisors (see below), whose sum is σ = 25056. Its totient is φ = 15136.

The previous prime is 19891. The next prime is 19913. The reversal of 19895 is 59891.

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

It is a cyclic number.

It is not a de Polignac number, because 19895 - 2² = 19891 is a prime.

It is a super-2 number, since 2×19895² = 791622050, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29 + ... + 201.

It is an arithmetic number, because the mean of its divisors is an integer number (3132).

2¹⁹⁸⁹⁵ is an apocalyptic number.

19895 is a deficient number, since it is larger than the sum of its proper divisors (5161).

19895 is a wasteful number, since it uses less digits than its factorization.

19895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201.

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

The square root of 19895 is about 141.0496366532. The cubic root of 19895 is about 27.0965904853.

The spelling of 19895 in words is "nineteen thousand, eight hundred ninety-five".