2194735968 has 144 divisors (see below), whose sum is σ = 6350971536. Its totient is φ = 718848000.

The previous prime is 2194735943. The next prime is 2194735981. The reversal of 2194735968 is 8695374912.

2194735968 is a `hidden beast` number, since 2 + 1 + 9 + 47 + 3 + 596 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7011780 + ... + 7012092.

It is an arithmetic number, because the mean of its divisors is an integer number (44103969).

Almost surely, 2^2194735968 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 2194735968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3175485768).

2194735968 is an abundant number, since it is smaller than the sum of its proper divisors (4156235568).

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

2194735968 is a wasteful number, since it uses less digits than its factorization.

2194735968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677 (or 666 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The square root of 2194735968 is about 46848.0092213106. The cubic root of 2194735968 is about 1299.5532918839.

The spelling of 2194735968 in words is "two billion, one hundred ninety-four million, seven hundred thirty-five thousand, nine hundred sixty-eight".