2889864894 has 16 divisors (see below), whose sum is σ = 6605405568. Its totient is φ = 825675672.

The previous prime is 2889864893. The next prime is 2889864937. The reversal of 2889864894 is 4984689882.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2889864893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34403112 + ... + 34403195.

It is an arithmetic number, because the mean of its divisors is an integer number (412837848).

Almost surely, 2^2889864894 is an apocalyptic number.

2889864894 is an abundant number, since it is smaller than the sum of its proper divisors (3715540674).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2889864894 is a wasteful number, since it uses less digits than its factorization.

2889864894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68806319.

The product of its digits is 63700992, while the sum is 66.

The square root of 2889864894 is about 53757.4636120418. The cubic root of 2889864894 is about 1424.3799323804.

The spelling of 2889864894 in words is "two billion, eight hundred eighty-nine million, eight hundred sixty-four thousand, eight hundred ninety-four".