2644955841 has 16 divisors (see below), whose sum is σ = 3951188928. Its totient is φ = 1559678400.

The previous prime is 2644955837. The next prime is 2644955869. The reversal of 2644955841 is 1485594462.

2644955841 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2644955841 - 2² = 2644955837 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2644955041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1081890 + ... + 1084331.

It is an arithmetic number, because the mean of its divisors is an integer number (246949308).

Almost surely, 2^2644955841 is an apocalyptic number.

It is an amenable number.

2644955841 is a deficient number, since it is larger than the sum of its proper divisors (1306233087).

2644955841 is a wasteful number, since it uses less digits than its factorization.

2644955841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2166272.

The product of its digits is 1382400, while the sum is 48.

The square root of 2644955841 is about 51429.1341653736. The cubic root of 2644955841 is about 1382.9489276054.

The spelling of 2644955841 in words is "two billion, six hundred forty-four million, nine hundred fifty-five thousand, eight hundred forty-one".