10195309 has 6 divisors (see below), whose sum is σ = 10288590. Its totient is φ = 10102680.

The previous prime is 10195271. The next prime is 10195319. The reversal of 10195309 is 90359101.

It can be written as a sum of positive squares in only one way, i.e., 10017225 + 178084 = 3165^2 + 422^2 .

It is not a de Polignac number, because 10195309 - 2⁷ = 10195181 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 (10195319) 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 5 ways as a sum of consecutive naturals, for example, 44407 + ... + 44635.

It is an arithmetic number, because the mean of its divisors is an integer number (1714765).

Almost surely, 2^10195309 is an apocalyptic number.

It is an amenable number.

10195309 is a deficient number, since it is larger than the sum of its proper divisors (93281).

10195309 is an frugal number, since it uses more digits than its factorization.

10195309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651 (or 440 counting only the distinct ones).

The product of its (nonzero) digits is 1215, while the sum is 28.

The square root of 10195309 is about 3193.0093955389. The cubic root of 10195309 is about 216.8370370701.

It can be divided in two parts, 1019 and 5309, that added together give a triangular number (6328 = T₁₁₂).

The spelling of 10195309 in words is "ten million, one hundred ninety-five thousand, three hundred nine".