2134691568 has 120 divisors (see below), whose sum is σ = 6140346576. Its totient is φ = 691891200.

The previous prime is 2134691563. The next prime is 2134691593. The reversal of 2134691568 is 8651964312.

2134691568 is a `hidden beast` number, since 21 + 3 + 4 + 69 + 1 + 568 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2134691563) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3229158 + ... + 3229818.

Almost surely, 2^2134691568 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 2134691568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3070173288).

2134691568 is an abundant number, since it is smaller than the sum of its proper divisors (4005655008).

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

2134691568 is a wasteful number, since it uses less digits than its factorization.

2134691568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1263 (or 1254 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 2134691568 is about 46202.7225171851. The cubic root of 2134691568 is about 1287.5923217551.

The spelling of 2134691568 in words is "two billion, one hundred thirty-four million, six hundred ninety-one thousand, five hundred sixty-eight".