20436895186 has 16 divisors (see below), whose sum is σ = 31205116800. Its totient is φ = 10035525168.

The previous prime is 20436895181. The next prime is 20436895189. The reversal of 20436895186 is 68159863402.

It is not an unprimeable number, because it can be changed into a prime (20436895181) 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, 39256 + ... + 205948.

It is an arithmetic number, because the mean of its divisors is an integer number (1950319800).

Almost surely, 2^20436895186 is an apocalyptic number.

20436895186 is a deficient number, since it is larger than the sum of its proper divisors (10768221614).

20436895186 is a wasteful number, since it uses less digits than its factorization.

20436895186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167793.

The product of its (nonzero) digits is 2488320, while the sum is 52.

The spelling of 20436895186 in words is "twenty billion, four hundred thirty-six million, eight hundred ninety-five thousand, one hundred eighty-six".