1898805568 has 84 divisors (see below), whose sum is σ = 4159239840. Its totient is φ = 859429120.

The previous prime is 1898805563. The next prime is 1898805607. The reversal of 1898805568 is 8655088981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1898805563) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2779755 + ... + 2780437.

It is an arithmetic number, because the mean of its divisors is an integer number (49514760).

Almost surely, 2^1898805568 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 1898805568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2079619920).

1898805568 is an abundant number, since it is smaller than the sum of its proper divisors (2260434272).

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

1898805568 is a wasteful number, since it uses less digits than its factorization.

1898805568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076 (or 1055 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 58.

The square root of 1898805568 is about 43575.2862067480. The cubic root of 1898805568 is about 1238.3027351404.

The spelling of 1898805568 in words is "one billion, eight hundred ninety-eight million, eight hundred five thousand, five hundred sixty-eight".