2128262897 has 2 divisors, whose sum is σ = 2128262898. Its totient is φ = 2128262896.

The previous prime is 2128262893. The next prime is 2128262911. The reversal of 2128262897 is 7982628212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1459316401 + 668946496 = 38201^2 + 25864^2 .

It is a cyclic number.

It is not a de Polignac number, because 2128262897 - 2² = 2128262893 is a prime.

It is not a weakly prime, because it can be changed into another prime (2128262893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1064131448 + 1064131449.

It is an arithmetic number, because the mean of its divisors is an integer number (1064131449).

Almost surely, 2^2128262897 is an apocalyptic number.

It is an amenable number.

2128262897 is a deficient number, since it is larger than the sum of its proper divisors (1).

2128262897 is an equidigital number, since it uses as much as digits as its factorization.

2128262897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 47.

The square root of 2128262897 is about 46133.0997983010. The cubic root of 2128262897 is about 1286.2984844670.

The spelling of 2128262897 in words is "two billion, one hundred twenty-eight million, two hundred sixty-two thousand, eight hundred ninety-seven".