20380185862 has 4 divisors (see below), whose sum is σ = 30570278796. Its totient is φ = 10190092930.

The previous prime is 20380185811. The next prime is 20380185869. The reversal of 20380185862 is 26858108302.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20380185869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5095046464 + ... + 5095046467.

It is an arithmetic number, because the mean of its divisors is an integer number (7642569699).

Almost surely, 2^20380185862 is an apocalyptic number.

20380185862 is a deficient number, since it is larger than the sum of its proper divisors (10190092934).

20380185862 is a wasteful number, since it uses less digits than its factorization.

20380185862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10190092933.

The product of its (nonzero) digits is 184320, while the sum is 43.

The spelling of 20380185862 in words is "twenty billion, three hundred eighty million, one hundred eighty-five thousand, eight hundred sixty-two".