195394097215 has 4 divisors (see below), whose sum is σ = 234472916664. Its totient is φ = 156315277768.

The previous prime is 195394097201. The next prime is 195394097251. The reversal of 195394097215 is 512790493591.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 512790493591 = 2039 ⋅251491169.

It is a cyclic number.

It is not a de Polignac number, because 195394097215 - 2²⁹ = 194857226303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19539409717 + ... + 19539409726.

It is an arithmetic number, because the mean of its divisors is an integer number (58618229166).

Almost surely, 2^195394097215 is an apocalyptic number.

195394097215 is a deficient number, since it is larger than the sum of its proper divisors (39078819449).

195394097215 is an equidigital number, since it uses as much as digits as its factorization.

195394097215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39078819448.

The product of its (nonzero) digits is 3061800, while the sum is 55.

The spelling of 195394097215 in words is "one hundred ninety-five billion, three hundred ninety-four million, ninety-seven thousand, two hundred fifteen".