6138813 has 4 divisors (see below), whose sum is σ = 8185088. Its totient is φ = 4092540.

The previous prime is 6138793. The next prime is 6138823. The reversal of 6138813 is 3188316.

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 not a de Polignac number, because 6138813 - 2⁸ = 6138557 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6138823) 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, 1023133 + ... + 1023138.

It is an arithmetic number, because the mean of its divisors is an integer number (2046272).

Almost surely, 2^6138813 is an apocalyptic number.

It is an amenable number.

6138813 is a deficient number, since it is larger than the sum of its proper divisors (2046275).

6138813 is a wasteful number, since it uses less digits than its factorization.

6138813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2046274.

The product of its digits is 3456, while the sum is 30.

The square root of 6138813 is about 2477.6628099885. The cubic root of 6138813 is about 183.1027223460.

The spelling of 6138813 in words is "six million, one hundred thirty-eight thousand, eight hundred thirteen".