2646129841 has 2 divisors, whose sum is σ = 2646129842. Its totient is φ = 2646129840.

The previous prime is 2646129823. The next prime is 2646129869. The reversal of 2646129841 is 1489216462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2639390625 + 6739216 = 51375^2 + 2596^2 .

It is a cyclic number.

It is not a de Polignac number, because 2646129841 - 2⁵ = 2646129809 is a prime.

It is not a weakly prime, because it can be changed into another prime (2646123841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1323064920 + 1323064921.

It is an arithmetic number, because the mean of its divisors is an integer number (1323064921).

Almost surely, 2^2646129841 is an apocalyptic number.

It is an amenable number.

2646129841 is a deficient number, since it is larger than the sum of its proper divisors (1).

2646129841 is an equidigital number, since it uses as much as digits as its factorization.

2646129841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 165888, while the sum is 43.

The square root of 2646129841 is about 51440.5466631139. The cubic root of 2646129841 is about 1383.1535109685.

The spelling of 2646129841 in words is "two billion, six hundred forty-six million, one hundred twenty-nine thousand, eight hundred forty-one".