17970870918 has 512 divisors, whose sum is σ = 54010478592. Its totient is φ = 3832012800.

The previous prime is 17970870913. The next prime is 17970870919. The reversal of 17970870918 is 81907807971.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17970870913) by changing a digit.

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 255 ways as a sum of consecutive naturals, for example, 253110823 + ... + 253110893.

It is an arithmetic number, because the mean of its divisors is an integer number (105489216).

Almost surely, 2^17970870918 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 17970870918, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27005239296).

17970870918 is an abundant number, since it is smaller than the sum of its proper divisors (36039607674).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

17970870918 is a wasteful number, since it uses less digits than its factorization.

17970870918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228.

The product of its (nonzero) digits is 1778112, while the sum is 57.

It can be divided in two parts, 17970 and 870918, that added together give a palindrome (888888).

The spelling of 17970870918 in words is "seventeen billion, nine hundred seventy million, eight hundred seventy thousand, nine hundred eighteen".