2869421857 has 24 divisors (see below), whose sum is σ = 3219090336. Its totient is φ = 2548485504.

The previous prime is 2869421843. The next prime is 2869421873. The reversal of 2869421857 is 7581249682.

2869421857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-2869421857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2869421837) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1883298 + ... + 1884820.

It is an arithmetic number, because the mean of its divisors is an integer number (134128764).

Almost surely, 2^2869421857 is an apocalyptic number.

It is an amenable number.

2869421857 is a deficient number, since it is larger than the sum of its proper divisors (349668479).

2869421857 is a wasteful number, since it uses less digits than its factorization.

2869421857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1885 (or 1866 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 52.

The square root of 2869421857 is about 53566.9847667386. The cubic root of 2869421857 is about 1421.0132715294.

The spelling of 2869421857 in words is "two billion, eight hundred sixty-nine million, four hundred twenty-one thousand, eight hundred fifty-seven".