18023896206 has 24 divisors (see below), whose sum is σ = 39057220800. Its totient is φ = 6007127616.

The previous prime is 18023896193. The next prime is 18023896207. The reversal of 18023896206 is 60269832081.

18023896206 is a `hidden beast` number, since 18 + 0 + 2 + 3 + 8 + 9 + 620 + 6 = 666.

It is a super-2 number, since 2×18023896206² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18023896207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70470 + ... + 202518.

It is an arithmetic number, because the mean of its divisors is an integer number (1627384200).

Almost surely, 2^18023896206 is an apocalyptic number.

18023896206 is an abundant number, since it is smaller than the sum of its proper divisors (21033324594).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18023896206 is a wasteful number, since it uses less digits than its factorization.

18023896206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139640 (or 139637 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 18023896206 in words is "eighteen billion, twenty-three million, eight hundred ninety-six thousand, two hundred six".