2117382197 has 8 divisors (see below), whose sum is σ = 2422137600. Its totient is φ = 1813194864.

The previous prime is 2117382193. The next prime is 2117382209. The reversal of 2117382197 is 7912837112.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2117382197 - 2² = 2117382193 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 (2117382193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133997 + ... + 148962.

It is an arithmetic number, because the mean of its divisors is an integer number (302767200).

Almost surely, 2^2117382197 is an apocalyptic number.

It is an amenable number.

2117382197 is a deficient number, since it is larger than the sum of its proper divisors (304755403).

2117382197 is a wasteful number, since it uses less digits than its factorization.

2117382197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284035.

The product of its digits is 42336, while the sum is 41.

The square root of 2117382197 is about 46015.0214277903. The cubic root of 2117382197 is about 1284.1026800793.

The spelling of 2117382197 in words is "two billion, one hundred seventeen million, three hundred eighty-two thousand, one hundred ninety-seven".