80618009 has 4 divisors (see below), whose sum is σ = 80712720. Its totient is φ = 80523300.

The previous prime is 80618003. The next prime is 80618017. The reversal of 80618009 is 90081608.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80618009 - 2⁸ = 80617753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80618003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46067 + ... + 47784.

It is an arithmetic number, because the mean of its divisors is an integer number (20178180).

Almost surely, 2^80618009 is an apocalyptic number.

It is an amenable number.

80618009 is a deficient number, since it is larger than the sum of its proper divisors (94711).

80618009 is an equidigital number, since it uses as much as digits as its factorization.

80618009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94710.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 80618009 is about 8978.7531985237. The cubic root of 80618009 is about 431.9936430963.

The spelling of 80618009 in words is "eighty million, six hundred eighteen thousand, nine".