6138391611 has 16 divisors (see below), whose sum is σ = 8973446400. Its totient is φ = 3701538720.

The previous prime is 6138391607. The next prime is 6138391613. The reversal of 6138391611 is 1161938316.

It is a happy number.

It is not a de Polignac number, because 6138391611 - 2² = 6138391607 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6138391611.

It is not an unprimeable number, because it can be changed into a prime (6138391613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 460800 + ... + 473933.

It is an arithmetic number, because the mean of its divisors is an integer number (560840400).

Almost surely, 2^6138391611 is an apocalyptic number.

6138391611 is a deficient number, since it is larger than the sum of its proper divisors (2835054789).

6138391611 is a wasteful number, since it uses less digits than its factorization.

6138391611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934946.

The product of its digits is 23328, while the sum is 39.

The square root of 6138391611 is about 78347.8883633758. Note that the first 3 decimals coincide. The cubic root of 6138391611 is about 1830.9853265227.

The spelling of 6138391611 in words is "six billion, one hundred thirty-eight million, three hundred ninety-one thousand, six hundred eleven".