8155445518 has 8 divisors (see below), whose sum is σ = 13345274520. Its totient is φ = 3707020680.

The previous prime is 8155445461. The next prime is 8155445521.

It is a happy number.

8155445518 is nontrivially palindromic in base 10.

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

It is a super-2 number, since 2×8155445518² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 185351013 + ... + 185351056.

It is an arithmetic number, because the mean of its divisors is an integer number (1668159315).

Almost surely, 2^8155445518 is an apocalyptic number.

8155445518 is a deficient number, since it is larger than the sum of its proper divisors (5189829002).

8155445518 is a wasteful number, since it uses less digits than its factorization.

8155445518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370702082.

The product of its digits is 640000, while the sum is 46.

The square root of 8155445518 is about 90307.5053248621. The cubic root of 8155445518 is about 2012.8707869107.

The spelling of 8155445518 in words is "eight billion, one hundred fifty-five million, four hundred forty-five thousand, five hundred eighteen".