195948513 has 6 divisors (see below), whose sum is σ = 283036754. Its totient is φ = 130632336.

The previous prime is 195948503. The next prime is 195948517. The reversal of 195948513 is 315849591.

195948513 is a `hidden beast` number, since 1 + 9 + 594 + 8 + 51 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 117679104 + 78269409 = 10848^2 + 8847^2 .

It is not a de Polignac number, because 195948513 - 2⁶ = 195948449 is a prime.

It is a super-2 number, since 2×195948513² = 76791639493822338, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (195948517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10886020 + ... + 10886037.

Almost surely, 2^195948513 is an apocalyptic number.

It is an amenable number.

195948513 is a deficient number, since it is larger than the sum of its proper divisors (87088241).

195948513 is a wasteful number, since it uses less digits than its factorization.

195948513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21772063 (or 21772060 counting only the distinct ones).

The product of its digits is 194400, while the sum is 45.

The square root of 195948513 is about 13998.1610577961. The cubic root of 195948513 is about 580.8277054749.

The spelling of 195948513 in words is "one hundred ninety-five million, nine hundred forty-eight thousand, five hundred thirteen".