18093589685 has 8 divisors (see below), whose sum is σ = 22989502296. Its totient is φ = 13623408640.

The previous prime is 18093589681. The next prime is 18093589687. The reversal of 18093589685 is 58698539081.

It can be written as a sum of positive squares in 4 ways, for example, as 9015692401 + 9077897284 = 94951^2 + 95278^2 .

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

It is not a de Polignac number, because 18093589685 - 2² = 18093589681 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18093589681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106432796 + ... + 106432965.

It is an arithmetic number, because the mean of its divisors is an integer number (2873687787).

Almost surely, 2^18093589685 is an apocalyptic number.

It is an amenable number.

18093589685 is a deficient number, since it is larger than the sum of its proper divisors (4895912611).

18093589685 is a wasteful number, since it uses less digits than its factorization.

18093589685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212865783.

The product of its (nonzero) digits is 18662400, while the sum is 62.

The spelling of 18093589685 in words is "eighteen billion, ninety-three million, five hundred eighty-nine thousand, six hundred eighty-five".