1518728914 has 8 divisors (see below), whose sum is σ = 2280428028. Its totient is φ = 758586240.

The previous prime is 1518728909. The next prime is 1518728917. The reversal of 1518728914 is 4198278151.

It can be written as a sum of positive squares in 2 ways, for example, as 1377523225 + 141205689 = 37115^2 + 11883^2 .

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 (1518728917) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 386667 + ... + 390574.

Almost surely, 2^1518728914 is an apocalyptic number.

1518728914 is a deficient number, since it is larger than the sum of its proper divisors (761699114).

1518728914 is an equidigital number, since it uses as much as digits as its factorization.

1518728914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778220.

The product of its digits is 161280, while the sum is 46.

The square root of 1518728914 is about 38970.8726358546. The cubic root of 1518728914 is about 1149.4588289276.

The spelling of 1518728914 in words is "one billion, five hundred eighteen million, seven hundred twenty-eight thousand, nine hundred fourteen".