7978537322 has 16 divisors (see below), whose sum is σ = 13678761600. Its totient is φ = 3419055888.

The previous prime is 7978537309. The next prime is 7978537327. The reversal of 7978537322 is 2237358797.

It is not an unprimeable number, because it can be changed into a prime (7978537327) 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, 192179 + ... + 229977.

It is an arithmetic number, because the mean of its divisors is an integer number (854922600).

Almost surely, 2^7978537322 is an apocalyptic number.

7978537322 is a deficient number, since it is larger than the sum of its proper divisors (5700224278).

7978537322 is a wasteful number, since it uses less digits than its factorization.

7978537322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52885.

The product of its digits is 4445280, while the sum is 53.

The square root of 7978537322 is about 89322.6585027562. The cubic root of 7978537322 is about 1998.2098416446.

The spelling of 7978537322 in words is "seven billion, nine hundred seventy-eight million, five hundred thirty-seven thousand, three hundred twenty-two".