7996388018 has 8 divisors (see below), whose sum is σ = 11995586460. Its totient is φ = 3997859200.

The previous prime is 7996388017. The next prime is 7996388027. The reversal of 7996388018 is 8108836997.

It can be written as a sum of positive squares in 2 ways, for example, as 6471719809 + 1524668209 = 80447^2 + 39047^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (7996388017) 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 3 ways as a sum of consecutive naturals, for example, 136403 + ... + 186006.

Almost surely, 2^7996388018 is an apocalyptic number.

7996388018 is a deficient number, since it is larger than the sum of its proper divisors (3999198442).

7996388018 is a wasteful number, since it uses less digits than its factorization.

7996388018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334812.

The product of its (nonzero) digits is 5225472, while the sum is 59.

The square root of 7996388018 is about 89422.5252271484. The cubic root of 7996388018 is about 1999.6989561886.

The spelling of 7996388018 in words is "seven billion, nine hundred ninety-six million, three hundred eighty-eight thousand, eighteen".