7840381936 has 20 divisors (see below), whose sum is σ = 15233065200. Its totient is φ = 3909268352.

The previous prime is 7840381919. The next prime is 7840381949. The reversal of 7840381936 is 6391830487.

It is a happy number.

It is a super-2 number, since 2×7840381936² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7840381936.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 676741 + ... + 688228.

It is an arithmetic number, because the mean of its divisors is an integer number (761653260).

Almost surely, 2^7840381936 is an apocalyptic number.

It is an amenable number.

7840381936 is a deficient number, since it is larger than the sum of its proper divisors (7392683264).

7840381936 is a wasteful number, since it uses less digits than its factorization.

7840381936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1365336 (or 1365330 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 49.

The square root of 7840381936 is about 88545.9312221629. The cubic root of 7840381936 is about 1986.6090358090.

The spelling of 7840381936 in words is "seven billion, eight hundred forty million, three hundred eighty-one thousand, nine hundred thirty-six".