2881649633 has 2 divisors, whose sum is σ = 2881649634. Its totient is φ = 2881649632.

The previous prime is 2881649623. The next prime is 2881649647. The reversal of 2881649633 is 3369461882.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1540405504 + 1341244129 = 39248^2 + 36623^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2881649633 is a prime.

It is not a weakly prime, because it can be changed into another prime (2881649623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1440824816 + 1440824817.

It is an arithmetic number, because the mean of its divisors is an integer number (1440824817).

Almost surely, 2^2881649633 is an apocalyptic number.

It is an amenable number.

2881649633 is a deficient number, since it is larger than the sum of its proper divisors (1).

2881649633 is an equidigital number, since it uses as much as digits as its factorization.

2881649633 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1492992, while the sum is 50.

The square root of 2881649633 is about 53680.9988077718. The cubic root of 2881649633 is about 1423.0289166403.

The spelling of 2881649633 in words is "two billion, eight hundred eighty-one million, six hundred forty-nine thousand, six hundred thirty-three".