20185673882 has 8 divisors (see below), whose sum is σ = 33031102752. Its totient is φ = 9175306300.

The previous prime is 20185673867. The next prime is 20185673887. The reversal of 20185673882 is 28837658102.

It is a happy number.

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

It is a super-2 number, since 2×20185673882² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20185673882.

It is not an unprimeable number, because it can be changed into a prime (20185673887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 458765294 + ... + 458765337.

It is an arithmetic number, because the mean of its divisors is an integer number (4128887844).

Almost surely, 2^20185673882 is an apocalyptic number.

20185673882 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20185673882 is a deficient number, since it is larger than the sum of its proper divisors (12845428870).

20185673882 is a wasteful number, since it uses less digits than its factorization.

20185673882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 917530644.

The product of its (nonzero) digits is 1290240, while the sum is 50.

The spelling of 20185673882 in words is "twenty billion, one hundred eighty-five million, six hundred seventy-three thousand, eight hundred eighty-two".