6138193687 has 2 divisors, whose sum is σ = 6138193688. Its totient is φ = 6138193686.

The previous prime is 6138193673. The next prime is 6138193729. The reversal of 6138193687 is 7863918316.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6138193687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6138193387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3069096843 + 3069096844.

It is an arithmetic number, because the mean of its divisors is an integer number (3069096844).

Almost surely, 2^6138193687 is an apocalyptic number.

6138193687 is a deficient number, since it is larger than the sum of its proper divisors (1).

6138193687 is an equidigital number, since it uses as much as digits as its factorization.

6138193687 is an odious number, because the sum of its binary digits is odd.

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

The square root of 6138193687 is about 78346.6252432101. The cubic root of 6138193687 is about 1830.9656471095.

The spelling of 6138193687 in words is "six billion, one hundred thirty-eight million, one hundred ninety-three thousand, six hundred eighty-seven".