195390 has 48 divisors (see below), whose sum is σ = 550368. Its totient is φ = 47808.

The previous prime is 195389. The next prime is 195401. The reversal of 195390 is 93591.

It is a Curzon number.

It is a plaindrome in base 11.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1087 + ... + 1253.

It is an arithmetic number, because the mean of its divisors is an integer number (11466).

2¹⁹⁵³⁹⁰ is an apocalyptic number.

195390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 195390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275184).

195390 is an abundant number, since it is smaller than the sum of its proper divisors (354978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

195390 is a wasteful number, since it uses less digits than its factorization.

195390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193 (or 190 counting only the distinct ones).

The product of its (nonzero) digits is 1215, while the sum is 27.

The square root of 195390 is about 442.0294107862. The cubic root of 195390 is about 58.0275334989.

It can be divided in two parts, 195 and 390, that added together give a palindrome (585).

The spelling of 195390 in words is "one hundred ninety-five thousand, three hundred ninety".