18863370889 has 8 divisors (see below), whose sum is σ = 20684848032. Its totient is φ = 17059664640.

The previous prime is 18863370847. The next prime is 18863370923. The reversal of 18863370889 is 98807336881.

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 18863370889 - 2¹¹ = 18863368841 is a prime.

It is a super-2 number, since 2×18863370889² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18863370839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4440499 + ... + 4444744.

It is an arithmetic number, because the mean of its divisors is an integer number (2585606004).

Almost surely, 2^18863370889 is an apocalyptic number.

It is an amenable number.

18863370889 is a deficient number, since it is larger than the sum of its proper divisors (1821477143).

18863370889 is a wasteful number, since it uses less digits than its factorization.

18863370889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8885447.

The product of its (nonzero) digits is 13934592, while the sum is 61.

The spelling of 18863370889 in words is "eighteen billion, eight hundred sixty-three million, three hundred seventy thousand, eight hundred eighty-nine".