195593893 has 12 divisors (see below), whose sum is σ = 220997088. Its totient is φ = 171673040.

The previous prime is 195593833. The next prime is 195593917. The reversal of 195593893 is 398395591.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-195593893 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 195593893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195593813) 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 11 ways as a sum of consecutive naturals, for example, 1321 + ... + 19822.

It is an arithmetic number, because the mean of its divisors is an integer number (18416424).

Almost surely, 2^195593893 is an apocalyptic number.

It is an amenable number.

195593893 is a deficient number, since it is larger than the sum of its proper divisors (25403195).

195593893 is a wasteful number, since it uses less digits than its factorization.

195593893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21212 (or 21183 counting only the distinct ones).

The product of its digits is 1312200, while the sum is 52.

The square root of 195593893 is about 13985.4886578911. The cubic root of 195593893 is about 580.4771074243.

The spelling of 195593893 in words is "one hundred ninety-five million, five hundred ninety-three thousand, eight hundred ninety-three".