6389781134 has 8 divisors (see below), whose sum is σ = 10456005528. Its totient is φ = 2904445960.

The previous prime is 6389781127. The next prime is 6389781169. The reversal of 6389781134 is 4311879836.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145222277 + ... + 145222320.

It is an arithmetic number, because the mean of its divisors is an integer number (1307000691).

Almost surely, 2^6389781134 is an apocalyptic number.

6389781134 is a deficient number, since it is larger than the sum of its proper divisors (4066224394).

6389781134 is a wasteful number, since it uses less digits than its factorization.

6389781134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290444610.

The product of its digits is 870912, while the sum is 50.

The square root of 6389781134 is about 79936.1065726872. The cubic root of 6389781134 is about 1855.6468450811.

The spelling of 6389781134 in words is "six billion, three hundred eighty-nine million, seven hundred eighty-one thousand, one hundred thirty-four".