6338845989 has 24 divisors (see below), whose sum is σ = 10707483072. Its totient is φ = 3537959040.

The previous prime is 6338845943. The next prime is 6338846029. The reversal of 6338845989 is 9895488336.

6338845989 is a `hidden beast` number, since 6 + 3 + 38 + 8 + 4 + 598 + 9 = 666.

It is not a de Polignac number, because 6338845989 - 2⁹ = 6338845477 is a prime.

It is a super-2 number, since 2×6338845989² = 80361936944522776242, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6338845589) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1167252 + ... + 1172669.

It is an arithmetic number, because the mean of its divisors is an integer number (446145128).

Almost surely, 2^6338845989 is an apocalyptic number.

It is an amenable number.

6338845989 is a deficient number, since it is larger than the sum of its proper divisors (4368637083).

6338845989 is a wasteful number, since it uses less digits than its factorization.

6338845989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2339977 (or 2339974 counting only the distinct ones).

The product of its digits is 44789760, while the sum is 63.

The square root of 6338845989 is about 79616.8700025315. The cubic root of 6338845989 is about 1850.7030188114.

The spelling of 6338845989 in words is "six billion, three hundred thirty-eight million, eight hundred forty-five thousand, nine hundred eighty-nine".