1889653872 has 40 divisors (see below), whose sum is σ = 5093852544. Its totient is φ = 602497984.

The previous prime is 1889653823. The next prime is 1889653897. The reversal of 1889653872 is 2783569881.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 854718 + ... + 856925.

Almost surely, 2^1889653872 is an apocalyptic number.

1889653872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1889653872 is an abundant number, since it is smaller than the sum of its proper divisors (3204198672).

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

1889653872 is a wasteful number, since it uses less digits than its factorization.

1889653872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1711677 (or 1711671 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 57.

The square root of 1889653872 is about 43470.1492060931. The cubic root of 1889653872 is about 1236.3101095548.

The spelling of 1889653872 in words is "one billion, eight hundred eighty-nine million, six hundred fifty-three thousand, eight hundred seventy-two".