7918653728 has 12 divisors (see below), whose sum is σ = 15589849590. Its totient is φ = 3959326848.

The previous prime is 7918653713. The next prime is 7918653763. The reversal of 7918653728 is 8273568197.

It can be written as a sum of positive squares in only one way, i.e., 5136302224 + 2782351504 = 71668^2 + 52748^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123728933 + ... + 123728996.

Almost surely, 2^7918653728 is an apocalyptic number.

It is an amenable number.

7918653728 is a deficient number, since it is larger than the sum of its proper divisors (7671195862).

7918653728 is a wasteful number, since it uses less digits than its factorization.

7918653728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247457939 (or 247457931 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 56.

The square root of 7918653728 is about 88986.8177203792. The cubic root of 7918653728 is about 1993.1980368742.

The spelling of 7918653728 in words is "seven billion, nine hundred eighteen million, six hundred fifty-three thousand, seven hundred twenty-eight".