2141409191 has 4 divisors (see below), whose sum is σ = 2181813192. Its totient is φ = 2101005192.

The previous prime is 2141409187. The next prime is 2141409197. The reversal of 2141409191 is 1919041412.

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

It is a cyclic number.

It is not a de Polignac number, because 2141409191 - 2² = 2141409187 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2141409197) 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, 20201921 + ... + 20202026.

It is an arithmetic number, because the mean of its divisors is an integer number (545453298).

Almost surely, 2^2141409191 is an apocalyptic number.

2141409191 is a deficient number, since it is larger than the sum of its proper divisors (40404001).

2141409191 is an equidigital number, since it uses as much as digits as its factorization.

2141409191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40404000.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 2141409191 is about 46275.3626782114. The cubic root of 2141409191 is about 1288.9415412715.

The spelling of 2141409191 in words is "two billion, one hundred forty-one million, four hundred nine thousand, one hundred ninety-one".