7312681938 has 16 divisors (see below), whose sum is σ = 14655401280. Its totient is φ = 2432554416.

The previous prime is 7312681921. The next prime is 7312681949. The reversal of 7312681938 is 8391862137.

7312681938 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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, 1248393 + ... + 1254236.

It is an arithmetic number, because the mean of its divisors is an integer number (915962580).

Almost surely, 2^7312681938 is an apocalyptic number.

7312681938 is an abundant number, since it is smaller than the sum of its proper divisors (7342719342).

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

7312681938 is a wasteful number, since it uses less digits than its factorization.

7312681938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2503121.

The product of its digits is 435456, while the sum is 48.

The square root of 7312681938 is about 85514.2206770313. The cubic root of 7312681938 is about 1941.0001165235. Note that the first 3 decimals are identical.

The spelling of 7312681938 in words is "seven billion, three hundred twelve million, six hundred eighty-one thousand, nine hundred thirty-eight".