2991153879 has 16 divisors (see below), whose sum is σ = 5064387840. Its totient is φ = 1709230680.

The previous prime is 2991153871. The next prime is 2991153883. The reversal of 2991153879 is 9783511992.

2991153879 is a `hidden beast` number, since 2 + 99 + 11 + 538 + 7 + 9 = 666.

2991153879 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 2991153879 - 2³ = 2991153871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2991153871) 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, 7912917 + ... + 7913294.

It is an arithmetic number, because the mean of its divisors is an integer number (316524240).

Almost surely, 2^2991153879 is an apocalyptic number.

2991153879 is a deficient number, since it is larger than the sum of its proper divisors (2073233961).

2991153879 is a wasteful number, since it uses less digits than its factorization.

2991153879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15826227 (or 15826221 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 54.

The square root of 2991153879 is about 54691.4424658922. The cubic root of 2991153879 is about 1440.8305841995.

The spelling of 2991153879 in words is "two billion, nine hundred ninety-one million, one hundred fifty-three thousand, eight hundred seventy-nine".