195938993 has 8 divisors (see below), whose sum is σ = 203047680. Its totient is φ = 188853840.

The previous prime is 195938989. The next prime is 195939011. The reversal of 195938993 is 399839591.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 195938993 - 2² = 195938989 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195931993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12038 + ... + 23168.

It is an arithmetic number, because the mean of its divisors is an integer number (25380960).

Almost surely, 2^195938993 is an apocalyptic number.

It is an amenable number.

195938993 is a deficient number, since it is larger than the sum of its proper divisors (7108687).

195938993 is a wasteful number, since it uses less digits than its factorization.

195938993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11767.

The product of its digits is 2361960, while the sum is 56.

The square root of 195938993 is about 13997.8210089999. The cubic root of 195938993 is about 580.8182989745.

The spelling of 195938993 in words is "one hundred ninety-five million, nine hundred thirty-eight thousand, nine hundred ninety-three".