18189845707 has 8 divisors (see below), whose sum is σ = 19914088752. Its totient is φ = 16477372800.

The previous prime is 18189845689. The next prime is 18189845731. The reversal of 18189845707 is 70754898181.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18189845707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18189845747) 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, 2939298 + ... + 2945479.

It is an arithmetic number, because the mean of its divisors is an integer number (2489261094).

Almost surely, 2^18189845707 is an apocalyptic number.

18189845707 is a deficient number, since it is larger than the sum of its proper divisors (1724243045).

18189845707 is a wasteful number, since it uses less digits than its factorization.

18189845707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5885069.

The product of its (nonzero) digits is 4515840, while the sum is 58.

The spelling of 18189845707 in words is "eighteen billion, one hundred eighty-nine million, eight hundred forty-five thousand, seven hundred seven".