195542093 has 4 divisors (see below), whose sum is σ = 197272668. Its totient is φ = 193811520.

The previous prime is 195542051. The next prime is 195542111. The reversal of 195542093 is 390245591.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2137444 + 193404649 = 1462^2 + 13907^2 .

It is a cyclic number.

It is not a de Polignac number, because 195542093 - 2¹⁴ = 195525709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195542293) 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 3 ways as a sum of consecutive naturals, for example, 865118 + ... + 865343.

It is an arithmetic number, because the mean of its divisors is an integer number (49318167).

Almost surely, 2^195542093 is an apocalyptic number.

It is an amenable number.

195542093 is a deficient number, since it is larger than the sum of its proper divisors (1730575).

195542093 is a wasteful number, since it uses less digits than its factorization.

195542093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1730574.

The product of its (nonzero) digits is 48600, while the sum is 38.

The square root of 195542093 is about 13983.6366157019. The cubic root of 195542093 is about 580.4258594559.

The spelling of 195542093 in words is "one hundred ninety-five million, five hundred forty-two thousand, ninety-three".