18009337917 has 8 divisors (see below), whose sum is σ = 24013231200. Its totient is φ = 12005834960.

The previous prime is 18009337909. The next prime is 18009337961. The reversal of 18009337917 is 71973390081.

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

It is a cyclic number.

It is not a de Polignac number, because 18009337917 - 2³ = 18009337909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18009337217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36334 + ... + 193232.

It is an arithmetic number, because the mean of its divisors is an integer number (3001653900).

Almost surely, 2^18009337917 is an apocalyptic number.

It is an amenable number.

18009337917 is a deficient number, since it is larger than the sum of its proper divisors (6003893283).

18009337917 is a wasteful number, since it uses less digits than its factorization.

18009337917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195163.

The product of its (nonzero) digits is 285768, while the sum is 48.

The spelling of 18009337917 in words is "eighteen billion, nine million, three hundred thirty-seven thousand, nine hundred seventeen".