195276993 has 4 divisors (see below), whose sum is σ = 260369328. Its totient is φ = 130184660.

The previous prime is 195276989. The next prime is 195276997. The reversal of 195276993 is 399672591.

It is a happy number.

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.

It is an interprime number because it is at equal distance from previous prime (195276989) and next prime (195276997).

It is a cyclic number.

It is not a de Polignac number, because 195276993 - 2² = 195276989 is a prime.

It is not an unprimeable number, because it can be changed into a prime (195276997) 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, 32546163 + ... + 32546168.

It is an arithmetic number, because the mean of its divisors is an integer number (65092332).

Almost surely, 2^195276993 is an apocalyptic number.

It is an amenable number.

195276993 is a deficient number, since it is larger than the sum of its proper divisors (65092335).

195276993 is an equidigital number, since it uses as much as digits as its factorization.

195276993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65092334.

The product of its digits is 918540, while the sum is 51.

The square root of 195276993 is about 13974.1544645821. The cubic root of 195276993 is about 580.1634428399.

The spelling of 195276993 in words is "one hundred ninety-five million, two hundred seventy-six thousand, nine hundred ninety-three".