2159619408 has 200 divisors, whose sum is σ = 6650252928. Its totient is φ = 675088128.

The previous prime is 2159619353. The next prime is 2159619409. The reversal of 2159619408 is 8049169512.

2159619408 is a `hidden beast` number, since 2 + 1 + 596 + 19 + 40 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2159619409) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1579141 + ... + 1580507.

Almost surely, 2^2159619408 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 2159619408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3325126464).

2159619408 is an abundant number, since it is smaller than the sum of its proper divisors (4490633520).

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

2159619408 is a wasteful number, since it uses less digits than its factorization.

2159619408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1463 (or 1448 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 2159619408 is about 46471.7054561160. The cubic root of 2159619408 is about 1292.5848872810.

The spelling of 2159619408 in words is "two billion, one hundred fifty-nine million, six hundred nineteen thousand, four hundred eight".