20185186852 has 12 divisors (see below), whose sum is σ = 35407985116. Its totient is φ = 10068619680.

The previous prime is 20185186823. The next prime is 20185186919. The reversal of 20185186852 is 25868158102.

It can be written as a sum of positive squares in 2 ways, for example, as 64899136 + 20120287716 = 8056^2 + 141846^2 .

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5991543 + ... + 5994910.

Almost surely, 2^20185186852 is an apocalyptic number.

It is an amenable number.

20185186852 is a deficient number, since it is larger than the sum of its proper divisors (15222798264).

20185186852 is a wasteful number, since it uses less digits than its factorization.

20185186852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11986878 (or 11986876 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 46.

The spelling of 20185186852 in words is "twenty billion, one hundred eighty-five million, one hundred eighty-six thousand, eight hundred fifty-two".