2019896064 has 216 divisors, whose sum is σ = 6214021632. Its totient is φ = 629544960.

The previous prime is 2019896033. The next prime is 2019896069. The reversal of 2019896064 is 4606989102.

It is a happy number.

2019896064 is a `hidden beast` number, since 20 + 19 + 8 + 9 + 606 + 4 = 666.

It is not an unprimeable number, because it can be changed into a prime (2019896069) 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, 2490219 + ... + 2491029.

Almost surely, 2^2019896064 is an apocalyptic number.

2019896064 is a gapful number since it is divisible by the number (24) 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 2019896064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3107010816).

2019896064 is an abundant number, since it is smaller than the sum of its proper divisors (4194125568).

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

2019896064 is a wasteful number, since it uses less digits than its factorization.

2019896064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903 (or 886 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 2019896064 is about 44943.2538207905. The cubic root of 2019896064 is about 1264.0851835985.

The spelling of 2019896064 in words is "two billion, nineteen million, eight hundred ninety-six thousand, sixty-four".