20308106186 has 8 divisors (see below), whose sum is σ = 32065430880. Its totient is φ = 9619629228.

The previous prime is 20308106179. The next prime is 20308106191. The reversal of 20308106186 is 68160180302.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 267211886 + ... + 267211961.

It is an arithmetic number, because the mean of its divisors is an integer number (4008178860).

Almost surely, 2^20308106186 is an apocalyptic number.

20308106186 is a deficient number, since it is larger than the sum of its proper divisors (11757324694).

20308106186 is a wasteful number, since it uses less digits than its factorization.

20308106186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534423868.

The product of its (nonzero) digits is 13824, while the sum is 35.

Adding to 20308106186 its reverse (68160180302), we get a palindrome (88468286488).

The spelling of 20308106186 in words is "twenty billion, three hundred eight million, one hundred six thousand, one hundred eighty-six".