195248581 has 8 divisors (see below), whose sum is σ = 213129504. Its totient is φ = 177389520.

The previous prime is 195248569. The next prime is 195248591. The reversal of 195248581 is 185842591.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 195248581 - 2⁵ = 195248549 is a prime.

It is a super-2 number, since 2×195248581² = 76244016765027122, 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 (195248531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17391 + ... + 26323.

It is an arithmetic number, because the mean of its divisors is an integer number (26641188).

Almost surely, 2^195248581 is an apocalyptic number.

195248581 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

195248581 is a deficient number, since it is larger than the sum of its proper divisors (17880923).

195248581 is a wasteful number, since it uses less digits than its factorization.

195248581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10931.

The product of its digits is 115200, while the sum is 43.

The square root of 195248581 is about 13973.1378365777. The cubic root of 195248581 is about 580.1353043429.

The spelling of 195248581 in words is "one hundred ninety-five million, two hundred forty-eight thousand, five hundred eighty-one".