2381372191 has 4 divisors (see below), whose sum is σ = 2597860584. Its totient is φ = 2164883800.

The previous prime is 2381372143. The next prime is 2381372197. The reversal of 2381372191 is 1912731832.

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 2381372191 - 2²¹ = 2379275039 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2381372191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2381372197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108244180 + ... + 108244201.

It is an arithmetic number, because the mean of its divisors is an integer number (649465146).

Almost surely, 2^2381372191 is an apocalyptic number.

2381372191 is a deficient number, since it is larger than the sum of its proper divisors (216488393).

2381372191 is a wasteful number, since it uses less digits than its factorization.

2381372191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216488392.

The product of its digits is 18144, while the sum is 37.

The square root of 2381372191 is about 48799.3052307100. The cubic root of 2381372191 is about 1335.3929914195.

The spelling of 2381372191 in words is "two billion, three hundred eighty-one million, three hundred seventy-two thousand, one hundred ninety-one".