8190900009 has 32 divisors (see below), whose sum is σ = 12444526080. Its totient is φ = 5321462400.

The previous prime is 8190899993. The next prime is 8190900023. The reversal of 8190900009 is 9000090918.

It is not a de Polignac number, because 8190900009 - 2⁴ = 8190899993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8190902009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1126624 + ... + 1133870.

It is an arithmetic number, because the mean of its divisors is an integer number (388891440).

Almost surely, 2^8190900009 is an apocalyptic number.

It is an amenable number.

8190900009 is a deficient number, since it is larger than the sum of its proper divisors (4253626071).

8190900009 is a wasteful number, since it uses less digits than its factorization.

8190900009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8318 (or 8312 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 36.

The square root of 8190900009 is about 90503.5911386946. The cubic root of 8190900009 is about 2015.7834478102.

The spelling of 8190900009 in words is "eight billion, one hundred ninety million, nine hundred thousand, nine".