8218181426 has 32 divisors (see below), whose sum is σ = 15180359040. Its totient is φ = 3249363456.

The previous prime is 8218181423. The next prime is 8218181459. The reversal of 8218181426 is 6241818128.

It is not an unprimeable number, because it can be changed into a prime (8218181423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 348770 + ... + 371586.

It is an arithmetic number, because the mean of its divisors is an integer number (474386220).

Almost surely, 2^8218181426 is an apocalyptic number.

8218181426 is a deficient number, since it is larger than the sum of its proper divisors (6962177614).

8218181426 is a wasteful number, since it uses less digits than its factorization.

8218181426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24818.

The product of its digits is 49152, while the sum is 41.

The square root of 8218181426 is about 90654.1859265197. The cubic root of 8218181426 is about 2018.0189565651.

The spelling of 8218181426 in words is "eight billion, two hundred eighteen million, one hundred eighty-one thousand, four hundred twenty-six".