2116485947 has 2 divisors, whose sum is σ = 2116485948. Its totient is φ = 2116485946.

The previous prime is 2116485923. The next prime is 2116485953. The reversal of 2116485947 is 7495846112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2116485947 - 2⁶ = 2116485883 is a prime.

It is not a weakly prime, because it can be changed into another prime (2116485997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1058242973 + 1058242974.

It is an arithmetic number, because the mean of its divisors is an integer number (1058242974).

Almost surely, 2^2116485947 is an apocalyptic number.

2116485947 is a deficient number, since it is larger than the sum of its proper divisors (1).

2116485947 is an equidigital number, since it uses as much as digits as its factorization.

2116485947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 47.

The square root of 2116485947 is about 46005.2817293841. The cubic root of 2116485947 is about 1283.9214752802.

The spelling of 2116485947 in words is "two billion, one hundred sixteen million, four hundred eighty-five thousand, nine hundred forty-seven".