195280324819 has 4 divisors (see below), whose sum is σ = 195335507880. Its totient is φ = 195225141760.

The previous prime is 195280324801. The next prime is 195280324891. The reversal of 195280324819 is 918423082591.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 918423082591 = 7 ⋅131203297513.

It is a cyclic number.

It is not a de Polignac number, because 195280324819 - 2⁹ = 195280324307 is a prime.

It is a super-2 number, since 2×195280324819² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195280324919) 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, 27586222 + ... + 27593299.

It is an arithmetic number, because the mean of its divisors is an integer number (48833876970).

Almost surely, 2^195280324819 is an apocalyptic number.

195280324819 is a deficient number, since it is larger than the sum of its proper divisors (55183061).

195280324819 is an equidigital number, since it uses as much as digits as its factorization.

195280324819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55183060.

The product of its (nonzero) digits is 1244160, while the sum is 52.

The spelling of 195280324819 in words is "one hundred ninety-five billion, two hundred eighty million, three hundred twenty-four thousand, eight hundred nineteen".