8018215009 has 12 divisors (see below), whose sum is σ = 9371528688. Its totient is φ = 6840174600.

The previous prime is 8018214973. The next prime is 8018215021. The reversal of 8018215009 is 9005128108.

It is not a de Polignac number, because 8018215009 - 2¹⁵ = 8018182241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8018215039) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 377427 + ... + 398104.

It is an arithmetic number, because the mean of its divisors is an integer number (780960724).

Almost surely, 2^8018215009 is an apocalyptic number.

It is an amenable number.

8018215009 is a deficient number, since it is larger than the sum of its proper divisors (1353313679).

8018215009 is a wasteful number, since it uses less digits than its factorization.

8018215009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775756 (or 775749 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 34.

The square root of 8018215009 is about 89544.4862009940. The cubic root of 8018215009 is about 2001.5167668351.

The spelling of 8018215009 in words is "eight billion, eighteen million, two hundred fifteen thousand, nine".