10195440191 has 4 divisors (see below), whose sum is σ = 10207337712. Its totient is φ = 10183542672.

The previous prime is 10195440181. The next prime is 10195440259. The reversal of 10195440191 is 19104459101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10195440191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10195440131) 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 3 ways as a sum of consecutive naturals, for example, 5947475 + ... + 5949188.

It is an arithmetic number, because the mean of its divisors is an integer number (2551834428).

Almost surely, 2^10195440191 is an apocalyptic number.

10195440191 is a deficient number, since it is larger than the sum of its proper divisors (11897521).

10195440191 is an equidigital number, since it uses as much as digits as its factorization.

10195440191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11897520.

The product of its (nonzero) digits is 6480, while the sum is 35.

Adding to 10195440191 its reverse (19104459101), we get a palindrome (29299899292).

The spelling of 10195440191 in words is "ten billion, one hundred ninety-five million, four hundred forty thousand, one hundred ninety-one".