6138574849 has 4 divisors (see below), whose sum is σ = 6696627120. Its totient is φ = 5580522580.

The previous prime is 6138574837. The next prime is 6138574879. The reversal of 6138574849 is 9484758316.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6138574849 - 2⁷ = 6138574721 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6138574849.

It is not an unprimeable number, because it can be changed into a prime (6138574879) 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, 279026119 + ... + 279026140.

It is an arithmetic number, because the mean of its divisors is an integer number (1674156780).

Almost surely, 2^6138574849 is an apocalyptic number.

It is an amenable number.

6138574849 is a deficient number, since it is larger than the sum of its proper divisors (558052271).

6138574849 is a wasteful number, since it uses less digits than its factorization.

6138574849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558052270.

The product of its digits is 5806080, while the sum is 55.

The square root of 6138574849 is about 78349.0577416219. The cubic root of 6138574849 is about 1831.0035453425.

The spelling of 6138574849 in words is "six billion, one hundred thirty-eight million, five hundred seventy-four thousand, eight hundred forty-nine".