2129982077 has 2 divisors, whose sum is σ = 2129982078. Its totient is φ = 2129982076.

The previous prime is 2129981993. The next prime is 2129982083. The reversal of 2129982077 is 7702899212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1686416356 + 443565721 = 41066^2 + 21061^2 .

It is a cyclic number.

It is not a de Polignac number, because 2129982077 - 2¹² = 2129977981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2129982097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1064991038 + 1064991039.

It is an arithmetic number, because the mean of its divisors is an integer number (1064991039).

Almost surely, 2^2129982077 is an apocalyptic number.

It is an amenable number.

2129982077 is a deficient number, since it is larger than the sum of its proper divisors (1).

2129982077 is an equidigital number, since it uses as much as digits as its factorization.

2129982077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 254016, while the sum is 47.

The square root of 2129982077 is about 46151.7288625247. The cubic root of 2129982077 is about 1286.6447423563.

The spelling of 2129982077 in words is "two billion, one hundred twenty-nine million, nine hundred eighty-two thousand, seventy-seven".