6667928938 has 16 divisors (see below), whose sum is σ = 11552989824. Its totient is φ = 2852589760.

The previous prime is 6667928867. The next prime is 6667928941. The reversal of 6667928938 is 8398297666.

It is a super-2 number, since 2×6667928938² = 88922552644435615688, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6667928938.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8913970 + ... + 8914717.

It is an arithmetic number, because the mean of its divisors is an integer number (722061864).

Almost surely, 2^6667928938 is an apocalyptic number.

6667928938 is a deficient number, since it is larger than the sum of its proper divisors (4885060886).

6667928938 is a wasteful number, since it uses less digits than its factorization.

6667928938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17828717.

The product of its digits is 47029248, while the sum is 64.

The square root of 6667928938 is about 81657.3875286247. The cubic root of 6667928938 is about 1882.1908345462.

The spelling of 6667928938 in words is "six billion, six hundred sixty-seven million, nine hundred twenty-eight thousand, nine hundred thirty-eight".