195004997 has 4 divisors (see below), whose sum is σ = 212732736. Its totient is φ = 177277260.

The previous prime is 195004991. The next prime is 195005003. The reversal of 195004997 is 799400591.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 799400591 = 11 ⋅72672781.

It is an interprime number because it is at equal distance from previous prime (195004991) and next prime (195005003).

It is a cyclic number.

It is not a de Polignac number, because 195004997 - 2⁶ = 195004933 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 (195004991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8863853 + ... + 8863874.

It is an arithmetic number, because the mean of its divisors is an integer number (53183184).

Almost surely, 2^195004997 is an apocalyptic number.

It is an amenable number.

195004997 is a deficient number, since it is larger than the sum of its proper divisors (17727739).

195004997 is a wasteful number, since it uses less digits than its factorization.

195004997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17727738.

The product of its (nonzero) digits is 102060, while the sum is 44.

The square root of 195004997 is about 13964.4189639240. The cubic root of 195004997 is about 579.8939530650.

The spelling of 195004997 in words is "one hundred ninety-five million, four thousand, nine hundred ninety-seven".