2164988677 has 2 divisors, whose sum is σ = 2164988678. Its totient is φ = 2164988676.

The previous prime is 2164988653. The next prime is 2164988681. The reversal of 2164988677 is 7768894612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1907418276 + 257570401 = 43674^2 + 16049^2 .

It is a cyclic number.

It is not a de Polignac number, because 2164988677 - 2⁷ = 2164988549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2164988647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1082494338 + 1082494339.

It is an arithmetic number, because the mean of its divisors is an integer number (1082494339).

Almost surely, 2^2164988677 is an apocalyptic number.

It is an amenable number.

2164988677 is a deficient number, since it is larger than the sum of its proper divisors (1).

2164988677 is an equidigital number, since it uses as much as digits as its factorization.

2164988677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8128512, while the sum is 58.

The square root of 2164988677 is about 46529.4388210303. The cubic root of 2164988677 is about 1293.6552135680.

The spelling of 2164988677 in words is "two billion, one hundred sixty-four million, nine hundred eighty-eight thousand, six hundred seventy-seven".