7983978192 has 100 divisors (see below), whose sum is σ = 24467307876. Its totient is φ = 2504770560.

The previous prime is 7983978179. The next prime is 7983978193. The reversal of 7983978192 is 2918793897.

It can be written as a sum of positive squares in 2 ways, for example, as 5494367376 + 2489610816 = 74124^2 + 49896^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7983978193) 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 19 ways as a sum of consecutive naturals, for example, 159159 + ... + 203222.

Almost surely, 2^7983978192 is an apocalyptic number.

7983978192 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

7983978192 is an abundant number, since it is smaller than the sum of its proper divisors (16483329684).

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

7983978192 is a wasteful number, since it uses less digits than its factorization.

7983978192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362418 (or 362403 counting only the distinct ones).

The product of its digits is 13716864, while the sum is 63.

The square root of 7983978192 is about 89353.1095821516. The cubic root of 7983978192 is about 1998.6639570267.

The spelling of 7983978192 in words is "seven billion, nine hundred eighty-three million, nine hundred seventy-eight thousand, one hundred ninety-two".