8135445318 has 128 divisors (see below), whose sum is σ = 22060007424. Its totient is φ = 1931472000.

The previous prime is 8135445301. The next prime is 8135445341.

It is a happy number.

8135445318 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×8135445318² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 8135445318.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 612043 + ... + 625193.

It is an arithmetic number, because the mean of its divisors is an integer number (172343808).

Almost surely, 2^8135445318 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8135445318, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11030003712).

8135445318 is an abundant number, since it is smaller than the sum of its proper divisors (13924562106).

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

8135445318 is a wasteful number, since it uses less digits than its factorization.

8135445318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13290.

The product of its digits is 230400, while the sum is 42.

The square root of 8135445318 is about 90196.7034763466. The cubic root of 8135445318 is about 2011.2240028813.

The spelling of 8135445318 in words is "eight billion, one hundred thirty-five million, four hundred forty-five thousand, three hundred eighteen".