195842881 has 4 divisors (see below), whose sum is σ = 210907732. Its totient is φ = 180778032.

The previous prime is 195842863. The next prime is 195842891. The reversal of 195842881 is 188248591.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 188248591 = 2029 ⋅92779.

It can be written as a sum of positive squares in 2 ways, for example, as 44675856 + 151167025 = 6684^2 + 12295^2 .

It is a cyclic number.

It is not a de Polignac number, because 195842881 - 2¹³ = 195834689 is a prime.

It is a super-2 number, since 2×195842881² = 76708868076760322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195842831) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 7532406 + ... + 7532431.

It is an arithmetic number, because the mean of its divisors is an integer number (52726933).

Almost surely, 2^195842881 is an apocalyptic number.

It is an amenable number.

195842881 is a deficient number, since it is larger than the sum of its proper divisors (15064851).

195842881 is a wasteful number, since it uses less digits than its factorization.

195842881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15064850.

The product of its digits is 184320, while the sum is 46.

The square root of 195842881 is about 13994.3874821301. The cubic root of 195842881 is about 580.7233157733.

The spelling of 195842881 in words is "one hundred ninety-five million, eight hundred forty-two thousand, eight hundred eighty-one".