6140644187 has 4 divisors (see below), whose sum is σ = 6142585080. Its totient is φ = 6138703296.

The previous prime is 6140644129. The next prime is 6140644199. The reversal of 6140644187 is 7814460416.

6140644187 is digitally balanced in base 3, 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 not a de Polignac number, because 6140644187 - 2⁶ = 6140644123 is a prime.

It is a super-2 number, since 2×6140644187² = 75415022062673781938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6140644487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 965693 + ... + 972030.

It is an arithmetic number, because the mean of its divisors is an integer number (1535646270).

Almost surely, 2^6140644187 is an apocalyptic number.

6140644187 is a deficient number, since it is larger than the sum of its proper divisors (1940893).

6140644187 is a wasteful number, since it uses less digits than its factorization.

6140644187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1940892.

The product of its (nonzero) digits is 129024, while the sum is 41.

The square root of 6140644187 is about 78362.2625183832. The cubic root of 6140644187 is about 1831.2092684204.

The spelling of 6140644187 in words is "six billion, one hundred forty million, six hundred forty-four thousand, one hundred eighty-seven".