6138631 has 4 divisors (see below), whose sum is σ = 6405552. Its totient is φ = 5871712.

The previous prime is 6138611. The next prime is 6138647. The reversal of 6138631 is 1368316.

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 6138631 - 2⁵ = 6138599 is a prime.

It is a super-2 number, since 2×6138631² = 75365581108322, which contains 22 as substring.

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 6138631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6138611) 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 3 ways as a sum of consecutive naturals, for example, 133426 + ... + 133471.

It is an arithmetic number, because the mean of its divisors is an integer number (1601388).

Almost surely, 2^6138631 is an apocalyptic number.

6138631 is a deficient number, since it is larger than the sum of its proper divisors (266921).

6138631 is a wasteful number, since it uses less digits than its factorization.

6138631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266920.

The product of its digits is 2592, while the sum is 28.

The square root of 6138631 is about 2477.6260815547. The cubic root of 6138631 is about 183.1009128200.

The spelling of 6138631 in words is "six million, one hundred thirty-eight thousand, six hundred thirty-one".