6138643 has 16 divisors (see below), whose sum is σ = 7310016. Its totient is φ = 5045760.

The previous prime is 6138611. The next prime is 6138647. The reversal of 6138643 is 3468316.

It is not a de Polignac number, because 6138643 - 2⁵ = 6138611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6138647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20805 + ... + 21097.

It is an arithmetic number, because the mean of its divisors is an integer number (456876).

Almost surely, 2^6138643 is an apocalyptic number.

6138643 is a deficient number, since it is larger than the sum of its proper divisors (1171373).

6138643 is a wasteful number, since it uses less digits than its factorization.

6138643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414.

The product of its digits is 10368, while the sum is 31.

The square root of 6138643 is about 2477.6285032264. The cubic root of 6138643 is about 183.1010321305.

The spelling of 6138643 in words is "six million, one hundred thirty-eight thousand, six hundred forty-three".