3619221860 has 12 divisors (see below), whose sum is σ = 7600365948. Its totient is φ = 1447688736.

The previous prime is 3619221847. The next prime is 3619221869. The reversal of 3619221860 is 681229163.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1044065344 + 2575156516 = 32312^2 + 50746^2 .

It is not an unprimeable number, because it can be changed into a prime (3619221869) 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, 90480527 + ... + 90480566.

It is an arithmetic number, because the mean of its divisors is an integer number (633363829).

Almost surely, 2^3619221860 is an apocalyptic number.

It is an amenable number.

3619221860 is an abundant number, since it is smaller than the sum of its proper divisors (3981144088).

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

3619221860 is a wasteful number, since it uses less digits than its factorization.

3619221860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180961102 (or 180961100 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 3619221860 is about 60159.9689162154. The cubic root of 3619221860 is about 1535.3417821624.

The spelling of 3619221860 in words is "three billion, six hundred nineteen million, two hundred twenty-one thousand, eight hundred sixty".