1889834880 has 128 divisors (see below), whose sum is σ = 6231751200. Its totient is φ = 486563840.

The previous prime is 1889834827. The next prime is 1889834887. The reversal of 1889834880 is 884389881.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×1889834880² = 7142951747329228800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1889834880.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1889834887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38710 + ... + 72650.

Almost surely, 2^1889834880 is an apocalyptic number.

1889834880 is a gapful number since it is divisible by the number (10) 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 1889834880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3115875600).

1889834880 is an abundant number, since it is smaller than the sum of its proper divisors (4341916320).

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

1889834880 is a wasteful number, since it uses less digits than its factorization.

1889834880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33992 (or 33980 counting only the distinct ones).

The product of its (nonzero) digits is 3538944, while the sum is 57.

The square root of 1889834880 is about 43472.2311366693. The cubic root of 1889834880 is about 1236.3495832522.

The spelling of 1889834880 in words is "one billion, eight hundred eighty-nine million, eight hundred thirty-four thousand, eight hundred eighty".