2642944849 has 2 divisors, whose sum is σ = 2642944850. Its totient is φ = 2642944848.

The previous prime is 2642944771. The next prime is 2642944867. The reversal of 2642944849 is 9484492462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2031124624 + 611820225 = 45068^2 + 24735^2 .

It is a cyclic number.

It is not a de Polignac number, because 2642944849 - 2⁷ = 2642944721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2642944796 and 2642944805.

It is not a weakly prime, because it can be changed into another prime (2642944879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1321472424 + 1321472425.

It is an arithmetic number, because the mean of its divisors is an integer number (1321472425).

Almost surely, 2^2642944849 is an apocalyptic number.

It is an amenable number.

2642944849 is a deficient number, since it is larger than the sum of its proper divisors (1).

2642944849 is an equidigital number, since it uses as much as digits as its factorization.

2642944849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3981312, while the sum is 52.

The square root of 2642944849 is about 51409.5793505452. The cubic root of 2642944849 is about 1382.5983477937.

The spelling of 2642944849 in words is "two billion, six hundred forty-two million, nine hundred forty-four thousand, eight hundred forty-nine".