2195475840 has 384 divisors, whose sum is σ = 8286969600. Its totient is φ = 553900032.

The previous prime is 2195475823. The next prime is 2195475853. The reversal of 2195475840 is 485745912.

2195475840 is a `hidden beast` number, since 2 + 19 + 54 + 7 + 584 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a super-2 number, since 2×2195475840² = 9640228328047411200, which contains 22 as substring.

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 47 ways as a sum of consecutive naturals, for example, 2954509 + ... + 2955251.

It is an arithmetic number, because the mean of its divisors is an integer number (21580650).

Almost surely, 2^2195475840 is an apocalyptic number.

2195475840 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 2195475840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4143484800).

2195475840 is an abundant number, since it is smaller than the sum of its proper divisors (6091493760).

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

2195475840 is an equidigital number, since it uses as much as digits as its factorization.

2195475840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796 (or 772 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The square root of 2195475840 is about 46855.9050707592. The cubic root of 2195475840 is about 1299.6993071803.

The spelling of 2195475840 in words is "two billion, one hundred ninety-five million, four hundred seventy-five thousand, eight hundred forty".