1889412500 has 36 divisors (see below), whose sum is σ = 4132852668. Its totient is φ = 755760000.

The previous prime is 1889412491. The next prime is 1889412517. The reversal of 1889412500 is 52149881.

It can be written as a sum of positive squares in 6 ways, for example, as 1409101444 + 480311056 = 37538^2 + 21916^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63077 + ... + 88076.

It is an arithmetic number, because the mean of its divisors is an integer number (114801463).

Almost surely, 2^1889412500 is an apocalyptic number.

1889412500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1889412500 is an abundant number, since it is smaller than the sum of its proper divisors (2243440168).

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

1889412500 is an equidigital number, since it uses as much as digits as its factorization.

1889412500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151182 (or 151160 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 38.

The square root of 1889412500 is about 43467.3728214623. The cubic root of 1889412500 is about 1236.2574679300.

The spelling of 1889412500 in words is "one billion, eight hundred eighty-nine million, four hundred twelve thousand, five hundred".