6931894038 has 16 divisors (see below), whose sum is σ = 13884094656. Its totient is φ = 2307246920.

The previous prime is 6931894003. The next prime is 6931894043. The reversal of 6931894038 is 8304981396.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 841668 + ... + 849863.

It is an arithmetic number, because the mean of its divisors is an integer number (867755916).

Almost surely, 2^6931894038 is an apocalyptic number.

6931894038 is an abundant number, since it is smaller than the sum of its proper divisors (6952200618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6931894038 is a wasteful number, since it uses less digits than its factorization.

6931894038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1692219.

The product of its (nonzero) digits is 1119744, while the sum is 51.

The square root of 6931894038 is about 83257.9968411443. The cubic root of 6931894038 is about 1906.7070475267.

The spelling of 6931894038 in words is "six billion, nine hundred thirty-one million, eight hundred ninety-four thousand, thirty-eight".