3721609000 has 64 divisors (see below), whose sum is σ = 8722630800. Its totient is φ = 1486240000.

The previous prime is 3721608997. The next prime is 3721609013. The reversal of 3721609000 is 9061273.

It can be written as a sum of positive squares in 8 ways, for example, as 1340964 + 3720268036 = 1158^2 + 60994^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3721609000.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 698346 + ... + 703654.

Almost surely, 2^3721609000 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 3721609000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4361315400).

3721609000 is an abundant number, since it is smaller than the sum of its proper divisors (5001021800).

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

3721609000 is a wasteful number, since it uses less digits than its factorization.

3721609000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6031 (or 6017 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 3721609000 is about 61004.9915990487. The cubic root of 3721609000 is about 1549.6855414804.

The spelling of 3721609000 in words is "three billion, seven hundred twenty-one million, six hundred nine thousand".