6388840151 has 2 divisors, whose sum is σ = 6388840152. Its totient is φ = 6388840150.

The previous prime is 6388840103. The next prime is 6388840153. The reversal of 6388840151 is 1510488836.

It is a happy number.

6388840151 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6388840151 is a prime.

It is a Sophie Germain prime.

Together with 6388840153, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6388840153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3194420075 + 3194420076.

It is an arithmetic number, because the mean of its divisors is an integer number (3194420076).

Almost surely, 2^6388840151 is an apocalyptic number.

6388840151 is the 42725-th centered heptagonal number.

6388840151 is a deficient number, since it is larger than the sum of its proper divisors (1).

6388840151 is an equidigital number, since it uses as much as digits as its factorization.

6388840151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 184320, while the sum is 44.

The square root of 6388840151 is about 79930.2205113936. The cubic root of 6388840151 is about 1855.5557507844. Note that the first 3 decimals are identical.

The spelling of 6388840151 in words is "six billion, three hundred eighty-eight million, eight hundred forty thousand, one hundred fifty-one".