2891306379 has 32 divisors (see below), whose sum is σ = 4424361984. Its totient is φ = 1665671040.

The previous prime is 2891306377. The next prime is 2891306381. The reversal of 2891306379 is 9736031982.

It is an interprime number because it is at equal distance from previous prime (2891306377) and next prime (2891306381).

It is not a de Polignac number, because 2891306379 - 2¹ = 2891306377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2891306377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7869 + ... + 76449.

It is an arithmetic number, because the mean of its divisors is an integer number (138261312).

Almost surely, 2^2891306379 is an apocalyptic number.

2891306379 is a deficient number, since it is larger than the sum of its proper divisors (1533055605).

2891306379 is a wasteful number, since it uses less digits than its factorization.

2891306379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68667.

The product of its (nonzero) digits is 489888, while the sum is 48.

The square root of 2891306379 is about 53770.8692416256. The cubic root of 2891306379 is about 1424.6167232674.

The spelling of 2891306379 in words is "two billion, eight hundred ninety-one million, three hundred six thousand, three hundred seventy-nine".