195915541 has 4 divisors (see below), whose sum is σ = 204433632. Its totient is φ = 187397452.

The previous prime is 195915521. The next prime is 195915547. The reversal of 195915541 is 145519591.

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, and also an emirpimes, since its reverse is a distinct semiprime: 145519591 = 7 ⋅20788513.

It is a cyclic number.

It is not a de Polignac number, because 195915541 - 2⁵ = 195915509 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 195915494 and 195915503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195915547) 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, 4259011 + ... + 4259056.

It is an arithmetic number, because the mean of its divisors is an integer number (51108408).

Almost surely, 2^195915541 is an apocalyptic number.

It is an amenable number.

195915541 is a deficient number, since it is larger than the sum of its proper divisors (8518091).

195915541 is an equidigital number, since it uses as much as digits as its factorization.

195915541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8518090.

The product of its digits is 40500, while the sum is 40.

The square root of 195915541 is about 13996.9832821219. The cubic root of 195915541 is about 580.7951252747.

The spelling of 195915541 in words is "one hundred ninety-five million, nine hundred fifteen thousand, five hundred forty-one".