1518851018 has 4 divisors (see below), whose sum is σ = 2278276530. Its totient is φ = 759425508.

The previous prime is 1518851011. The next prime is 1518851057. The reversal of 1518851018 is 8101588151.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1119370849 + 399480169 = 33457^2 + 19987^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1518851011) 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 as a sum of consecutive naturals, namely, 379712753 + ... + 379712756.

Almost surely, 2^1518851018 is an apocalyptic number.

1518851018 is a deficient number, since it is larger than the sum of its proper divisors (759425512).

1518851018 is an equidigital number, since it uses as much as digits as its factorization.

1518851018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759425511.

The product of its (nonzero) digits is 12800, while the sum is 38.

The square root of 1518851018 is about 38972.4392102932. The cubic root of 1518851018 is about 1149.4896331434.

The spelling of 1518851018 in words is "one billion, five hundred eighteen million, eight hundred fifty-one thousand, eighteen".