7881937842 has 16 divisors (see below), whose sum is σ = 15766888032. Its totient is φ = 2626810560.

The previous prime is 7881937837. The next prime is 7881937849. The reversal of 7881937842 is 2487391887.

It is not an unprimeable number, because it can be changed into a prime (7881937849) 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, 90759 + ... + 154922.

It is an arithmetic number, because the mean of its divisors is an integer number (985430502).

Almost surely, 2^7881937842 is an apocalyptic number.

7881937842 is an abundant number, since it is smaller than the sum of its proper divisors (7884950190).

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

7881937842 is a wasteful number, since it uses less digits than its factorization.

7881937842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251033.

The product of its digits is 5419008, while the sum is 57.

The square root of 7881937842 is about 88780.2784519175. The cubic root of 7881937842 is about 1990.1126879109.

The spelling of 7881937842 in words is "seven billion, eight hundred eighty-one million, nine hundred thirty-seven thousand, eight hundred forty-two".