1898412720 has 320 divisors, whose sum is σ = 6376734720. Its totient is φ = 466329600.

The previous prime is 1898412679. The next prime is 1898412749. The reversal of 1898412720 is 272148981.

1898412720 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 21330436 + ... + 21330524.

It is an arithmetic number, because the mean of its divisors is an integer number (19927296).

Almost surely, 2^1898412720 is an apocalyptic number.

1898412720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1898412720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3188367360).

1898412720 is an abundant number, since it is smaller than the sum of its proper divisors (4478322000).

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

1898412720 is a wasteful number, since it uses less digits than its factorization.

1898412720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244 (or 238 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 42.

The square root of 1898412720 is about 43570.7782808616. The cubic root of 1898412720 is about 1238.2173308712.

The spelling of 1898412720 in words is "one billion, eight hundred ninety-eight million, four hundred twelve thousand, seven hundred twenty".