2114571891 has 4 divisors (see below), whose sum is σ = 2819429192. Its totient is φ = 1409714592.

The previous prime is 2114571889. The next prime is 2114571923. The reversal of 2114571891 is 1981754112.

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

It is not a de Polignac number, because 2114571891 - 2¹ = 2114571889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2114571841) 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, 352428646 + ... + 352428651.

It is an arithmetic number, because the mean of its divisors is an integer number (704857298).

Almost surely, 2^2114571891 is an apocalyptic number.

2114571891 is a deficient number, since it is larger than the sum of its proper divisors (704857301).

2114571891 is an equidigital number, since it uses as much as digits as its factorization.

2114571891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704857300.

The product of its digits is 20160, while the sum is 39.

The square root of 2114571891 is about 45984.4744560596. The cubic root of 2114571891 is about 1283.5343180056.

The spelling of 2114571891 in words is "two billion, one hundred fourteen million, five hundred seventy-one thousand, eight hundred ninety-one".