8419031820 has 72 divisors (see below), whose sum is σ = 25618464144. Its totient is φ = 2237977728.

The previous prime is 8419031813. The next prime is 8419031867. The reversal of 8419031820 is 281309148.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 in 23 ways as a sum of consecutive naturals, for example, 16714 + ... + 130833.

It is an arithmetic number, because the mean of its divisors is an integer number (355812002).

Almost surely, 2^8419031820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8419031820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12809232072).

8419031820 is an abundant number, since it is smaller than the sum of its proper divisors (17199432324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8419031820 is a wasteful number, since it uses less digits than its factorization.

8419031820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147879 (or 147874 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 8419031820 is about 91755.2822457650. The cubic root of 8419031820 is about 2034.3267836123.

The spelling of 8419031820 in words is "eight billion, four hundred nineteen million, thirty-one thousand, eight hundred twenty".