173812142018 has 8 divisors (see below), whose sum is σ = 260721938700. Its totient is φ = 86904829120.

The previous prime is 173812142011. The next prime is 173812142027. The reversal of 173812142018 is 810241218371.

It can be written as a sum of positive squares in 2 ways, for example, as 171489576769 + 2322565249 = 414113^2 + 48193^2 .

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

It is a super-2 number, since 2×173812142018² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (173812142011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 434843 + ... + 732606.

Almost surely, 2^173812142018 is an apocalyptic number.

173812142018 is a deficient number, since it is larger than the sum of its proper divisors (86909796682).

173812142018 is a wasteful number, since it uses less digits than its factorization.

173812142018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1241892.

The product of its (nonzero) digits is 21504, while the sum is 38.

The spelling of 173812142018 in words is "one hundred seventy-three billion, eight hundred twelve million, one hundred forty-two thousand, eighteen".