10195891 has 2 divisors, whose sum is σ = 10195892. Its totient is φ = 10195890.

The previous prime is 10195883. The next prime is 10195919. The reversal of 10195891 is 19859101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10195891 - 2³ = 10195883 is a prime.

It is not a weakly prime, because it can be changed into another prime (10195811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5097945 + 5097946.

It is an arithmetic number, because the mean of its divisors is an integer number (5097946).

Almost surely, 2^10195891 is an apocalyptic number.

10195891 is a deficient number, since it is larger than the sum of its proper divisors (1).

10195891 is an equidigital number, since it uses as much as digits as its factorization.

10195891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 34.

The square root of 10195891 is about 3193.1005308321. The cubic root of 10195891 is about 216.8411630445.

The spelling of 10195891 in words is "ten million, one hundred ninety-five thousand, eight hundred ninety-one".