6938401906 has 16 divisors (see below), whose sum is σ = 10431404928. Its totient is φ = 3461277600.

The previous prime is 6938401903. The next prime is 6938401933. The reversal of 6938401906 is 6091048396.

It is not an unprimeable number, because it can be changed into a prime (6938401903) 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, 2172771 + ... + 2175961.

It is an arithmetic number, because the mean of its divisors is an integer number (651962808).

Almost surely, 2^6938401906 is an apocalyptic number.

6938401906 is a deficient number, since it is larger than the sum of its proper divisors (3493003022).

6938401906 is a wasteful number, since it uses less digits than its factorization.

6938401906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5337.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 6938401906 is about 83297.0702125831. The cubic root of 6938401906 is about 1907.3035519620.

The spelling of 6938401906 in words is "six billion, nine hundred thirty-eight million, four hundred one thousand, nine hundred six".