6138744669 has 12 divisors (see below), whose sum is σ = 8906841216. Its totient is φ = 4074143112.

The previous prime is 6138744653. The next prime is 6138744673. The reversal of 6138744669 is 9664478316.

6138744669 is a `hidden beast` number, since 6 + 138 + 7 + 446 + 69 = 666.

It is not a de Polignac number, because 6138744669 - 2⁴ = 6138744653 is a prime.

It is a super-2 number, since 2×6138744669² = 75368372222351839122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6138744169) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1527327 + ... + 1531340.

It is an arithmetic number, because the mean of its divisors is an integer number (742236768).

Almost surely, 2^6138744669 is an apocalyptic number.

It is an amenable number.

6138744669 is a deficient number, since it is larger than the sum of its proper divisors (2768096547).

6138744669 is a wasteful number, since it uses less digits than its factorization.

6138744669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3058896 (or 3058893 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 54.

The square root of 6138744669 is about 78350.1414740267. The cubic root of 6138744669 is about 1831.0204297259.

The spelling of 6138744669 in words is "six billion, one hundred thirty-eight million, seven hundred forty-four thousand, six hundred sixty-nine".