1889504928 has 96 divisors (see below), whose sum is σ = 5521521600. Its totient is φ = 628639488.

The previous prime is 1889504861. The next prime is 1889504971. The reversal of 1889504928 is 8294059881.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 533050 + ... + 536582.

It is an arithmetic number, because the mean of its divisors is an integer number (57515850).

Almost surely, 2^1889504928 is an apocalyptic number.

1889504928 is a gapful number since it is divisible by the number (18) 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 1889504928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2760760800).

1889504928 is an abundant number, since it is smaller than the sum of its proper divisors (3632016672).

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

1889504928 is a wasteful number, since it uses less digits than its factorization.

1889504928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4171 (or 4157 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 54.

The square root of 1889504928 is about 43468.4359967092. The cubic root of 1889504928 is about 1236.2776263906.

The spelling of 1889504928 in words is "one billion, eight hundred eighty-nine million, five hundred four thousand, nine hundred twenty-eight".