20325749186 has 4 divisors (see below), whose sum is σ = 30488623782. Its totient is φ = 10162874592.

The previous prime is 20325749179. The next prime is 20325749209. The reversal of 20325749186 is 68194752302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 17590982161 + 2734767025 = 132631^2 + 52295^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20325749186.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5081437295 + ... + 5081437298.

It is a 2-persistent number, because it is pandigital, and so is 2⋅20325749186 = 40651498372, but 3⋅20325749186 = 60977247558 is not.

Almost surely, 2^20325749186 is an apocalyptic number.

20325749186 is a deficient number, since it is larger than the sum of its proper divisors (10162874596).

20325749186 is a wasteful number, since it uses less digits than its factorization.

20325749186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10162874595.

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 20325749186 in words is "twenty billion, three hundred twenty-five million, seven hundred forty-nine thousand, one hundred eighty-six".