1889426616 has 192 divisors, whose sum is σ = 6081143040. Its totient is φ = 478579200.

The previous prime is 1889426603. The next prime is 1889426621. The reversal of 1889426616 is 6166249881.

1889426616 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1889426616² = 7139865874498422912, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 832315 + ... + 834581.

It is an arithmetic number, because the mean of its divisors is an integer number (31672620).

Almost surely, 2^1889426616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1889426616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3040571520).

1889426616 is an abundant number, since it is smaller than the sum of its proper divisors (4191716424).

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

1889426616 is a wasteful number, since it uses less digits than its factorization.

1889426616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2346 (or 2331 counting only the distinct ones).

The product of its digits is 995328, while the sum is 51.

The square root of 1889426616 is about 43467.5351958217. The cubic root of 1889426616 is about 1236.2605466590.

The spelling of 1889426616 in words is "one billion, eight hundred eighty-nine million, four hundred twenty-six thousand, six hundred sixteen".