2116827893 has 2 divisors, whose sum is σ = 2116827894. Its totient is φ = 2116827892.

The previous prime is 2116827863. The next prime is 2116827899. The reversal of 2116827893 is 3987286112.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1717107844 + 399720049 = 41438^2 + 19993^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2116827893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2116827899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1058413946 + 1058413947.

It is an arithmetic number, because the mean of its divisors is an integer number (1058413947).

Almost surely, 2^2116827893 is an apocalyptic number.

It is an amenable number.

2116827893 is a deficient number, since it is larger than the sum of its proper divisors (1).

2116827893 is an equidigital number, since it uses as much as digits as its factorization.

2116827893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 290304, while the sum is 47.

The square root of 2116827893 is about 46008.9979569214. The cubic root of 2116827893 is about 1283.9906163285.

The spelling of 2116827893 in words is "two billion, one hundred sixteen million, eight hundred twenty-seven thousand, eight hundred ninety-three".