18352036687 has 4 divisors (see below), whose sum is σ = 18352318600. Its totient is φ = 18351754776.

The previous prime is 18352036657. The next prime is 18352036727. The reversal of 18352036687 is 78663025381.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 78663025381 = 37 ⋅2126027713.

It is a cyclic number.

It is not a de Polignac number, because 18352036687 - 2¹¹ = 18352034639 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18352036687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18352036657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12064 + ... + 191962.

It is an arithmetic number, because the mean of its divisors is an integer number (4588079650).

Almost surely, 2^18352036687 is an apocalyptic number.

18352036687 is a deficient number, since it is larger than the sum of its proper divisors (281913).

18352036687 is a wasteful number, since it uses less digits than its factorization.

18352036687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281912.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 18352036687 in words is "eighteen billion, three hundred fifty-two million, thirty-six thousand, six hundred eighty-seven".