2649640127 has 2 divisors, whose sum is σ = 2649640128. Its totient is φ = 2649640126.

The previous prime is 2649640061. The next prime is 2649640141. The reversal of 2649640127 is 7210469462.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2649640127 - 2⁸ = 2649639871 is a prime.

It is a super-2 number, since 2×2649640127² = 14041185605217152258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2649640157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1324820063 + 1324820064.

It is an arithmetic number, because the mean of its divisors is an integer number (1324820064).

Almost surely, 2^2649640127 is an apocalyptic number.

2649640127 is a deficient number, since it is larger than the sum of its proper divisors (1).

2649640127 is an equidigital number, since it uses as much as digits as its factorization.

2649640127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 2649640127 is about 51474.6551906858. The cubic root of 2649640127 is about 1383.7648590281.

The spelling of 2649640127 in words is "two billion, six hundred forty-nine million, six hundred forty thousand, one hundred twenty-seven".