2991868375 has 16 divisors (see below), whose sum is σ = 3862609920. Its totient is φ = 2310957600.

The previous prime is 2991868367. The next prime is 2991868379. The reversal of 2991868375 is 5738681992.

2991868375 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 2991868375 - 2³ = 2991868367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2991868379) 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, 409047 + ... + 416296.

It is an arithmetic number, because the mean of its divisors is an integer number (241413120).

Almost surely, 2^2991868375 is an apocalyptic number.

2991868375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2991868375 is a deficient number, since it is larger than the sum of its proper divisors (870741545).

2991868375 is an equidigital number, since it uses as much as digits as its factorization.

2991868375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 825387 (or 825377 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 58.

The square root of 2991868375 is about 54697.9741398162. The cubic root of 2991868375 is about 1440.9452986511.

The spelling of 2991868375 in words is "two billion, nine hundred ninety-one million, eight hundred sixty-eight thousand, three hundred seventy-five".