2543722387 has 8 divisors (see below), whose sum is σ = 2589939392. Its totient is φ = 2497651200.

The previous prime is 2543722367. The next prime is 2543722403. The reversal of 2543722387 is 7832273452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2543722387 - 2²⁷ = 2409504659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2543722367) 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 7 ways as a sum of consecutive naturals, for example, 939 + ... + 71332.

It is an arithmetic number, because the mean of its divisors is an integer number (323742424).

Almost surely, 2^2543722387 is an apocalyptic number.

2543722387 is a deficient number, since it is larger than the sum of its proper divisors (46217005).

2543722387 is an equidigital number, since it uses as much as digits as its factorization.

2543722387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72909.

The product of its digits is 564480, while the sum is 43.

The square root of 2543722387 is about 50435.3287587183. The cubic root of 2543722387 is about 1365.0751812679.

The spelling of 2543722387 in words is "two billion, five hundred forty-three million, seven hundred twenty-two thousand, three hundred eighty-seven".