6838920986 has 8 divisors (see below), whose sum is σ = 10261094580. Its totient is φ = 3418556128.

The previous prime is 6838920967. The next prime is 6838920997. The reversal of 6838920986 is 6890298386.

It can be written as a sum of positive squares in 2 ways, for example, as 6647956225 + 190964761 = 81535^2 + 13819^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 442691 + ... + 457878.

Almost surely, 2^6838920986 is an apocalyptic number.

6838920986 is a deficient number, since it is larger than the sum of its proper divisors (3422173594).

6838920986 is a wasteful number, since it uses less digits than its factorization.

6838920986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904368.

The product of its (nonzero) digits is 8957952, while the sum is 59.

The square root of 6838920986 is about 82697.7689300020. The cubic root of 6838920986 is about 1898.1441699901.

The spelling of 6838920986 in words is "six billion, eight hundred thirty-eight million, nine hundred twenty thousand, nine hundred eighty-six".