11738543218 has 8 divisors (see below), whose sum is σ = 17609075820. Its totient is φ = 5868851280.

The previous prime is 11738543203. The next prime is 11738543221. The reversal of 11738543218 is 81234583711.

It can be written as a sum of positive squares in 2 ways, for example, as 11630112649 + 108430569 = 107843^2 + 10413^2 .

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

It is a super-3 number, since 3×11738543218³ (a number of 31 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174013 + ... + 231856.

Almost surely, 2^11738543218 is an apocalyptic number.

11738543218 is a deficient number, since it is larger than the sum of its proper divisors (5870532602).

11738543218 is a wasteful number, since it uses less digits than its factorization.

11738543218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420332.

The product of its digits is 161280, while the sum is 43.

The spelling of 11738543218 in words is "eleven billion, seven hundred thirty-eight million, five hundred forty-three thousand, two hundred eighteen".