1518136868 has 12 divisors (see below), whose sum is σ = 2657399052. Its totient is φ = 758880000.

The previous prime is 1518136831. The next prime is 1518136883. The reversal of 1518136868 is 8686318151.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1472870884 + 45265984 = 38378^2 + 6728^2 .

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 in 3 ways as a sum of consecutive naturals, for example, 28133 + ... + 61868.

It is an arithmetic number, because the mean of its divisors is an integer number (221449921).

Almost surely, 2^1518136868 is an apocalyptic number.

It is an amenable number.

1518136868 is a deficient number, since it is larger than the sum of its proper divisors (1139262184).

1518136868 is a wasteful number, since it uses less digits than its factorization.

1518136868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94222 (or 94220 counting only the distinct ones).

The product of its digits is 276480, while the sum is 47.

The square root of 1518136868 is about 38963.2758889701. The cubic root of 1518136868 is about 1149.3094450261.

The spelling of 1518136868 in words is "one billion, five hundred eighteen million, one hundred thirty-six thousand, eight hundred sixty-eight".