2904856891 has 24 divisors (see below), whose sum is σ = 3153772544. Its totient is φ = 2672097120.

The previous prime is 2904856883. The next prime is 2904856937. The reversal of 2904856891 is 1986584092.

2904856891 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 2904856891 - 2³ = 2904856883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2904853891) 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, 1745926 + ... + 1747588.

Almost surely, 2^2904856891 is an apocalyptic number.

2904856891 is a deficient number, since it is larger than the sum of its proper divisors (248915653).

2904856891 is a wasteful number, since it uses less digits than its factorization.

2904856891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1819 (or 1790 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 52.

The square root of 2904856891 is about 53896.7243067703. The cubic root of 2904856891 is about 1426.8388107186.

The spelling of 2904856891 in words is "two billion, nine hundred four million, eight hundred fifty-six thousand, eight hundred ninety-one".