2895890643 has 16 divisors (see below), whose sum is σ = 4516009600. Its totient is φ = 1828983240.

The previous prime is 2895890623. The next prime is 2895890659. The reversal of 2895890643 is 3460985982.

It is not a de Polignac number, because 2895890643 - 2⁶ = 2895890579 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2895890643.

It is not an unprimeable number, because it can be changed into a prime (2895890623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2821993 + ... + 2823018.

It is an arithmetic number, because the mean of its divisors is an integer number (282250600).

Almost surely, 2^2895890643 is an apocalyptic number.

2895890643 is a deficient number, since it is larger than the sum of its proper divisors (1620118957).

2895890643 is a wasteful number, since it uses less digits than its factorization.

2895890643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5645039 (or 5645033 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The square root of 2895890643 is about 53813.4801234784. The cubic root of 2895890643 is about 1425.3692516782.

The spelling of 2895890643 in words is "two billion, eight hundred ninety-five million, eight hundred ninety thousand, six hundred forty-three".