1518416138 has 16 divisors (see below), whose sum is σ = 2348312904. Its totient is φ = 735805440.

The previous prime is 1518416117. The next prime is 1518416171. The reversal of 1518416138 is 8316148151.

It can be written as a sum of positive squares in 4 ways, for example, as 1409777209 + 108638929 = 37547^2 + 10423^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20903 + ... + 58938.

Almost surely, 2^1518416138 is an apocalyptic number.

1518416138 is a deficient number, since it is larger than the sum of its proper divisors (829896766).

1518416138 is a wasteful number, since it uses less digits than its factorization.

1518416138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80137.

The product of its digits is 23040, while the sum is 38.

The square root of 1518416138 is about 38966.8594834123. The cubic root of 1518416138 is about 1149.3799147306.

The spelling of 1518416138 in words is "one billion, five hundred eighteen million, four hundred sixteen thousand, one hundred thirty-eight".