6888139330 has 16 divisors (see below), whose sum is σ = 12399650424. Its totient is φ = 2755033600.

The previous prime is 6888139267. The next prime is 6888139381. The reversal of 6888139330 is 339318886.

It can be written as a sum of positive squares in 4 ways, for example, as 2136380841 + 4751758489 = 46221^2 + 68933^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168594 + ... + 205426.

Almost surely, 2^6888139330 is an apocalyptic number.

6888139330 is a deficient number, since it is larger than the sum of its proper divisors (5511511094).

6888139330 is a wasteful number, since it uses less digits than its factorization.

6888139330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55541.

The product of its (nonzero) digits is 746496, while the sum is 49.

The square root of 6888139330 is about 82994.8150790156. The cubic root of 6888139330 is about 1902.6868109484.

The spelling of 6888139330 in words is "six billion, eight hundred eighty-eight million, one hundred thirty-nine thousand, three hundred thirty".