2117969793 has 6 divisors (see below), whose sum is σ = 3059289714. Its totient is φ = 1411979856.

The previous prime is 2117969783. The next prime is 2117969797. The reversal of 2117969793 is 3979697112.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1670520384 + 447449409 = 40872^2 + 21153^2 .

It is not a de Polignac number, because 2117969793 - 2²⁹ = 1581098881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2117969797) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 117664980 + ... + 117664997.

It is an arithmetic number, because the mean of its divisors is an integer number (509881619).

Almost surely, 2^2117969793 is an apocalyptic number.

It is an amenable number.

2117969793 is a deficient number, since it is larger than the sum of its proper divisors (941319921).

2117969793 is a wasteful number, since it uses less digits than its factorization.

2117969793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235329983 (or 235329980 counting only the distinct ones).

The product of its digits is 1285956, while the sum is 54.

The square root of 2117969793 is about 46021.4058129475. The cubic root of 2117969793 is about 1284.2214531273.

The spelling of 2117969793 in words is "two billion, one hundred seventeen million, nine hundred sixty-nine thousand, seven hundred ninety-three".