1889914572 has 384 divisors, whose sum is σ = 6585600000. Its totient is φ = 454616064.

The previous prime is 1889914567. The next prime is 1889914613. The reversal of 1889914572 is 2754199881.

It is a happy number.

1889914572 is a `hidden beast` number, since 188 + 9 + 9 + 1 + 457 + 2 = 666.

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 127 ways as a sum of consecutive naturals, for example, 5415054 + ... + 5415402.

It is an arithmetic number, because the mean of its divisors is an integer number (17150000).

Almost surely, 2^1889914572 is an apocalyptic number.

1889914572 is a gapful number since it is divisible by the number (12) 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 1889914572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3292800000).

1889914572 is an abundant number, since it is smaller than the sum of its proper divisors (4695685428).

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

1889914572 is a wasteful number, since it uses less digits than its factorization.

1889914572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430 (or 422 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 54.

The square root of 1889914572 is about 43473.1477121222. The cubic root of 1889914572 is about 1236.3669614523.

The spelling of 1889914572 in words is "one billion, eight hundred eighty-nine million, nine hundred fourteen thousand, five hundred seventy-two".