2195128320 has 544 divisors, whose sum is σ = 9059627520. Its totient is φ = 440401920.

The previous prime is 2195128301. The next prime is 2195128337. The reversal of 2195128320 is 238215912.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75694066 + ... + 75694094.

Almost surely, 2^2195128320 is an apocalyptic number.

2195128320 is a gapful number since it is divisible by the number (20) 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 2195128320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4529813760).

2195128320 is an abundant number, since it is smaller than the sum of its proper divisors (6864499200).

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

2195128320 is an equidigital number, since it uses as much as digits as its factorization.

2195128320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87 (or 57 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 2195128320 is about 46852.1965333537. The cubic root of 2195128320 is about 1299.6307274631.

The spelling of 2195128320 in words is "two billion, one hundred ninety-five million, one hundred twenty-eight thousand, three hundred twenty".