2845978991 has 16 divisors (see below), whose sum is σ = 3018892800. Its totient is φ = 2677533408.

The previous prime is 2845978939. The next prime is 2845978997. The reversal of 2845978991 is 1998795482.

2845978991 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 2845978991 - 2¹⁴ = 2845962607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2845978997) 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, 344390 + ... + 352556.

It is an arithmetic number, because the mean of its divisors is an integer number (188680800).

Almost surely, 2^2845978991 is an apocalyptic number.

2845978991 is a deficient number, since it is larger than the sum of its proper divisors (172913809).

2845978991 is a wasteful number, since it uses less digits than its factorization.

2845978991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8438.

The product of its digits is 13063680, while the sum is 62.

The square root of 2845978991 is about 53347.7177674922. The cubic root of 2845978991 is about 1417.1328431633.

The spelling of 2845978991 in words is "two billion, eight hundred forty-five million, nine hundred seventy-eight thousand, nine hundred ninety-one".