3539817820 has 144 divisors (see below), whose sum is σ = 9664673760. Its totient is φ = 1076275200.

The previous prime is 3539817817. The next prime is 3539817821. The reversal of 3539817820 is 287189353.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3539817821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 437976 + ... + 445984.

It is an arithmetic number, because the mean of its divisors is an integer number (67115790).

Almost surely, 2^3539817820 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 3539817820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4832336880).

3539817820 is an abundant number, since it is smaller than the sum of its proper divisors (6124855940).

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

3539817820 is a wasteful number, since it uses less digits than its factorization.

3539817820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8084 (or 8075 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 3539817820 is about 59496.3681244494. The cubic root of 3539817820 is about 1524.0304248053.

The spelling of 3539817820 in words is "three billion, five hundred thirty-nine million, eight hundred seventeen thousand, eight hundred twenty".