6738931987 has 2 divisors, whose sum is σ = 6738931988. Its totient is φ = 6738931986.

The previous prime is 6738931939. The next prime is 6738932003. The reversal of 6738931987 is 7891398376.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6738931987 - 2³¹ = 4591448339 is a prime.

It is not a weakly prime, because it can be changed into another prime (6738931907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3369465993 + 3369465994.

It is an arithmetic number, because the mean of its divisors is an integer number (3369465994).

Almost surely, 2^6738931987 is an apocalyptic number.

6738931987 is a deficient number, since it is larger than the sum of its proper divisors (1).

6738931987 is an equidigital number, since it uses as much as digits as its factorization.

6738931987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13716864, while the sum is 61.

The square root of 6738931987 is about 82090.9982093043. The cubic root of 6738931987 is about 1888.8480599304.

The spelling of 6738931987 in words is "six billion, seven hundred thirty-eight million, nine hundred thirty-one thousand, nine hundred eighty-seven".