2195563590 has 128 divisors (see below), whose sum is σ = 6410327040. Its totient is φ = 530323200.

The previous prime is 2195563589. The next prime is 2195563619. The reversal of 2195563590 is 953655912.

2195563590 is a `hidden beast` number, since 2 + 1 + 9 + 5 + 5 + 635 + 9 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 922482 + ... + 924858.

It is an arithmetic number, because the mean of its divisors is an integer number (50080680).

Almost surely, 2^2195563590 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2195563590, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3205163520).

2195563590 is an abundant number, since it is smaller than the sum of its proper divisors (4214763450).

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

2195563590 is a wasteful number, since it uses less digits than its factorization.

2195563590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2715 (or 2709 counting only the distinct ones).

The product of its (nonzero) digits is 364500, while the sum is 45.

The square root of 2195563590 is about 46856.8414428459. The cubic root of 2195563590 is about 1299.7166226513.

The spelling of 2195563590 in words is "two billion, one hundred ninety-five million, five hundred sixty-three thousand, five hundred ninety".