2117298187 has 2 divisors, whose sum is σ = 2117298188. Its totient is φ = 2117298186.

The previous prime is 2117298181. The next prime is 2117298191. The reversal of 2117298187 is 7818927112.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2117298187 is a prime.

It is a super-2 number, since 2×2117298187² = 8965903225346973938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2117298181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1058649093 + 1058649094.

It is an arithmetic number, because the mean of its divisors is an integer number (1058649094).

Almost surely, 2^2117298187 is an apocalyptic number.

2117298187 is a deficient number, since it is larger than the sum of its proper divisors (1).

2117298187 is an equidigital number, since it uses as much as digits as its factorization.

2117298187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112896, while the sum is 46.

The square root of 2117298187 is about 46014.1085646566. The cubic root of 2117298187 is about 1284.0856970183.

It can be divided in two parts, 2117 and 298187, that added together give a square (300304 = 548²).

The spelling of 2117298187 in words is "two billion, one hundred seventeen million, two hundred ninety-eight thousand, one hundred eighty-seven".