2642422649 has 2 divisors, whose sum is σ = 2642422650. Its totient is φ = 2642422648.

The previous prime is 2642422631. The next prime is 2642422669. The reversal of 2642422649 is 9462242462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1348725625 + 1293697024 = 36725^2 + 35968^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2642422649 is a prime.

It is not a weakly prime, because it can be changed into another prime (2642422669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1321211324 + 1321211325.

It is an arithmetic number, because the mean of its divisors is an integer number (1321211325).

Almost surely, 2^2642422649 is an apocalyptic number.

It is an amenable number.

2642422649 is a deficient number, since it is larger than the sum of its proper divisors (1).

2642422649 is an equidigital number, since it uses as much as digits as its factorization.

2642422649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 331776, while the sum is 41.

The square root of 2642422649 is about 51404.5002796448. The cubic root of 2642422649 is about 1382.5072826555.

The spelling of 2642422649 in words is "two billion, six hundred forty-two million, four hundred twenty-two thousand, six hundred forty-nine".