195345381 has 32 divisors (see below), whose sum is σ = 325518336. Its totient is φ = 101232000.

The previous prime is 195345377. The next prime is 195345383. The reversal of 195345381 is 183543591.

It is not a de Polignac number, because 195345381 - 2² = 195345377 is a prime.

It is a super-2 number, since 2×195345381² = 76319635756070322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195345383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 131161 + ... + 132641.

It is an arithmetic number, because the mean of its divisors is an integer number (10172448).

Almost surely, 2^195345381 is an apocalyptic number.

195345381 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

195345381 is a deficient number, since it is larger than the sum of its proper divisors (130172955).

195345381 is a wasteful number, since it uses less digits than its factorization.

195345381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2073.

The product of its digits is 64800, while the sum is 39.

The square root of 195345381 is about 13976.6011962852. The cubic root of 195345381 is about 580.2311613256.

The spelling of 195345381 in words is "one hundred ninety-five million, three hundred forty-five thousand, three hundred eighty-one".