2126227657 has 2 divisors, whose sum is σ = 2126227658. Its totient is φ = 2126227656.

The previous prime is 2126227643. The next prime is 2126227687. The reversal of 2126227657 is 7567226212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1899303561 + 226924096 = 43581^2 + 15064^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2126227657 is a prime.

It is not a weakly prime, because it can be changed into another prime (2126227627) 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, 1063113828 + 1063113829.

It is an arithmetic number, because the mean of its divisors is an integer number (1063113829).

Almost surely, 2^2126227657 is an apocalyptic number.

It is an amenable number.

2126227657 is a deficient number, since it is larger than the sum of its proper divisors (1).

2126227657 is an equidigital number, since it uses as much as digits as its factorization.

2126227657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141120, while the sum is 40.

The square root of 2126227657 is about 46111.0361735670. The cubic root of 2126227657 is about 1285.8883282037. Note that the first 3 decimals are identical.

The spelling of 2126227657 in words is "two billion, one hundred twenty-six million, two hundred twenty-seven thousand, six hundred fifty-seven".