3609250020 has 144 divisors (see below), whose sum is σ = 11438848512. Its totient is φ = 920079360.

The previous prime is 3609250003. The next prime is 3609250069. The reversal of 3609250020 is 200529063.

3609250020 is a `hidden beast` number, since 3 + 609 + 2 + 50 + 0 + 2 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 459244 + ... + 467036.

It is an arithmetic number, because the mean of its divisors is an integer number (79436448).

Almost surely, 2^3609250020 is an apocalyptic number.

3609250020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3609250020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5719424256).

3609250020 is an abundant number, since it is smaller than the sum of its proper divisors (7829598492).

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

3609250020 is a wasteful number, since it uses less digits than its factorization.

3609250020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7922 (or 7917 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 3609250020 is about 60077.0340479621. The cubic root of 3609250020 is about 1533.9304046297.

Adding to 3609250020 its reverse (200529063), we get a palindrome (3809779083).

The spelling of 3609250020 in words is "three billion, six hundred nine million, two hundred fifty thousand, twenty".