105538174018 has 4 divisors (see below), whose sum is σ = 158307261030. Its totient is φ = 52769087008.

The previous prime is 105538174013. The next prime is 105538174039. The reversal of 105538174018 is 810471835501.

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., 85774594129 + 19763579889 = 292873^2 + 140583^2 .

It is a super-2 number, since 2×105538174018² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105538174013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26384543503 + ... + 26384543506.

Almost surely, 2^105538174018 is an apocalyptic number.

105538174018 is a deficient number, since it is larger than the sum of its proper divisors (52769087012).

105538174018 is an equidigital number, since it uses as much as digits as its factorization.

105538174018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52769087011.

The product of its (nonzero) digits is 134400, while the sum is 43.

The spelling of 105538174018 in words is "one hundred five billion, five hundred thirty-eight million, one hundred seventy-four thousand, eighteen".