195915 has 16 divisors (see below), whose sum is σ = 322848. Its totient is φ = 101376.

The previous prime is 195913. The next prime is 195919. The reversal of 195915 is 519591.

It is not a de Polignac number, because 195915 - 2¹ = 195913 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 195915.

It is not an unprimeable number, because it can be changed into a prime (195913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 379 + ... + 731.

It is an arithmetic number, because the mean of its divisors is an integer number (20178).

2¹⁹⁵⁹¹⁵ is an apocalyptic number.

195915 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

195915 is a deficient number, since it is larger than the sum of its proper divisors (126933).

195915 is a wasteful number, since it uses less digits than its factorization.

195915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398.

The product of its digits is 2025, while the sum is 30.

The square root of 195915 is about 442.6228642987. The cubic root of 195915 is about 58.0794590673.

The spelling of 195915 in words is "one hundred ninety-five thousand, nine hundred fifteen".