10189865817 has 12 divisors (see below), whose sum is σ = 14722992804. Its totient is φ = 6791260320.

The previous prime is 10189865801. The next prime is 10189865849. The reversal of 10189865817 is 71856898101.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1058916681 + 9130949136 = 32541^2 + 95556^2 .

It is not a de Polignac number, because 10189865817 - 2⁴ = 10189865801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10189865867) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 132418 + ... + 194715.

It is an arithmetic number, because the mean of its divisors is an integer number (1226916067).

Almost surely, 2^10189865817 is an apocalyptic number.

It is an amenable number.

10189865817 is a deficient number, since it is larger than the sum of its proper divisors (4533126987).

10189865817 is a wasteful number, since it uses less digits than its factorization.

10189865817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330600 (or 330597 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 54.

The spelling of 10189865817 in words is "ten billion, one hundred eighty-nine million, eight hundred sixty-five thousand, eight hundred seventeen".