1898670444 has 48 divisors (see below), whose sum is σ = 4850904576. Its totient is φ = 573220800.

The previous prime is 1898670407. The next prime is 1898670457. The reversal of 1898670444 is 4440768981.

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, 9234 + ... + 62310.

It is an arithmetic number, because the mean of its divisors is an integer number (101060512).

Almost surely, 2^1898670444 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 1898670444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2425452288).

1898670444 is an abundant number, since it is smaller than the sum of its proper divisors (2952234132).

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

1898670444 is a wasteful number, since it uses less digits than its factorization.

1898670444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53366 (or 53364 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 51.

The square root of 1898670444 is about 43573.7357131564. The cubic root of 1898670444 is about 1238.2733608167.

The spelling of 1898670444 in words is "one billion, eight hundred ninety-eight million, six hundred seventy thousand, four hundred forty-four".