2891641379 has 4 divisors (see below), whose sum is σ = 3154517880. Its totient is φ = 2628764880.

The previous prime is 2891641321. The next prime is 2891641421. The reversal of 2891641379 is 9731461982.

2891641379 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2891641379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2891640379) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131438234 + ... + 131438255.

It is an arithmetic number, because the mean of its divisors is an integer number (788629470).

Almost surely, 2^2891641379 is an apocalyptic number.

2891641379 is a deficient number, since it is larger than the sum of its proper divisors (262876501).

2891641379 is a wasteful number, since it uses less digits than its factorization.

2891641379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262876500.

The product of its digits is 653184, while the sum is 50.

The square root of 2891641379 is about 53773.9842209967. The cubic root of 2891641379 is about 1424.6717420154.

The spelling of 2891641379 in words is "two billion, eight hundred ninety-one million, six hundred forty-one thousand, three hundred seventy-nine".