195405 has 16 divisors (see below), whose sum is σ = 357504. Its totient is φ = 89280.

The previous prime is 195401. The next prime is 195407. The reversal of 195405 is 504591.

It is not a de Polignac number, because 195405 - 2² = 195401 is a prime.

It is a super-2 number, since 2×195405² = 76366228050, which contains 22 as substring.

195405 is a modest number, since divided by 405 gives 195 as remainder.

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 195405.

It is not an unprimeable number, because it can be changed into a prime (195401) 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, 826 + ... + 1035.

It is an arithmetic number, because the mean of its divisors is an integer number (22344).

2¹⁹⁵⁴⁰⁵ is an apocalyptic number.

195405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

195405 is a deficient number, since it is larger than the sum of its proper divisors (162099).

195405 is a wasteful number, since it uses less digits than its factorization.

195405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1876.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 195405 is about 442.0463776574. The cubic root of 195405 is about 58.0290183765.

Adding to 195405 its reverse (504591), we get a palindrome (699996).

The spelling of 195405 in words is "one hundred ninety-five thousand, four hundred five".