6138186397 has 4 divisors (see below), whose sum is σ = 7015070176. Its totient is φ = 5261302620.

The previous prime is 6138186367. The next prime is 6138186401. The reversal of 6138186397 is 7936818316.

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 6138186397 - 2¹⁵ = 6138153629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6138186337) 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, 438441879 + ... + 438441892.

It is an arithmetic number, because the mean of its divisors is an integer number (1753767544).

Almost surely, 2^6138186397 is an apocalyptic number.

It is an amenable number.

6138186397 is a deficient number, since it is larger than the sum of its proper divisors (876883779).

6138186397 is an equidigital number, since it uses as much as digits as its factorization.

6138186397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876883778.

The product of its digits is 1306368, while the sum is 52.

The square root of 6138186397 is about 78346.5787191757. The cubic root of 6138186397 is about 1830.9649222630.

The spelling of 6138186397 in words is "six billion, one hundred thirty-eight million, one hundred eighty-six thousand, three hundred ninety-seven".