195015207 has 4 divisors (see below), whose sum is σ = 260020280. Its totient is φ = 130010136.

The previous prime is 195015187. The next prime is 195015209. The reversal of 195015207 is 702510591.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 702510591 = 3 ⋅234170197.

It is not a de Polignac number, because 195015207 - 2²³ = 186626599 is a prime.

It is a super-2 number, since 2×195015207² = 76061861922505698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195015209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32502532 + ... + 32502537.

It is an arithmetic number, because the mean of its divisors is an integer number (65005070).

Almost surely, 2^195015207 is an apocalyptic number.

195015207 is a deficient number, since it is larger than the sum of its proper divisors (65005073).

195015207 is an equidigital number, since it uses as much as digits as its factorization.

195015207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65005072.

The product of its (nonzero) digits is 3150, while the sum is 30.

The square root of 195015207 is about 13964.7845310982. The cubic root of 195015207 is about 579.9040735133.

Adding to 195015207 its reverse (702510591), we get a palindrome (897525798).

The spelling of 195015207 in words is "one hundred ninety-five million, fifteen thousand, two hundred seven".