6191139137 has 2 divisors, whose sum is σ = 6191139138. Its totient is φ = 6191139136.

The previous prime is 6191139121. The next prime is 6191139181. The reversal of 6191139137 is 7319311916.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5985962161 + 205176976 = 77369^2 + 14324^2 .

It is a cyclic number.

It is not a de Polignac number, because 6191139137 - 2⁴ = 6191139121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6191139094 and 6191139103.

It is not a weakly prime, because it can be changed into another prime (6191139337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3095569568 + 3095569569.

It is an arithmetic number, because the mean of its divisors is an integer number (3095569569).

Almost surely, 2^6191139137 is an apocalyptic number.

It is an amenable number.

6191139137 is a deficient number, since it is larger than the sum of its proper divisors (1).

6191139137 is an equidigital number, since it uses as much as digits as its factorization.

6191139137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30618, while the sum is 41.

The square root of 6191139137 is about 78683.7920857911. The cubic root of 6191139137 is about 1836.2149603030.

The spelling of 6191139137 in words is "six billion, one hundred ninety-one million, one hundred thirty-nine thousand, one hundred thirty-seven".