6388420135 has 8 divisors (see below), whose sum is σ = 7666534656. Its totient is φ = 5110449120.

The previous prime is 6388420133. The next prime is 6388420183. The reversal of 6388420135 is 5310248836.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6388420135 - 2¹ = 6388420133 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 (6388420133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144697 + ... + 183613.

It is an arithmetic number, because the mean of its divisors is an integer number (958316832).

Almost surely, 2^6388420135 is an apocalyptic number.

6388420135 is a deficient number, since it is larger than the sum of its proper divisors (1278114521).

6388420135 is a wasteful number, since it uses less digits than its factorization.

6388420135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71753.

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 6388420135 is about 79927.5930764839. The cubic root of 6388420135 is about 1855.5150871602.

The spelling of 6388420135 in words is "six billion, three hundred eighty-eight million, four hundred twenty thousand, one hundred thirty-five".