1898427900 has 72 divisors (see below), whose sum is σ = 5508397440. Its totient is φ = 504808640.

The previous prime is 1898427863. The next prime is 1898427977. The reversal of 1898427900 is 97248981.

It is a self number, because there is not a number n which added to its sum of digits gives 1898427900.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98887 + ... + 116513.

It is an arithmetic number, because the mean of its divisors is an integer number (76505520).

Almost surely, 2^1898427900 is an apocalyptic number.

1898427900 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 1898427900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2754198720).

1898427900 is an abundant number, since it is smaller than the sum of its proper divisors (3609969540).

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

1898427900 is a wasteful number, since it uses less digits than its factorization.

1898427900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18003 (or 17996 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 48.

The square root of 1898427900 is about 43570.9524798345. The cubic root of 1898427900 is about 1238.2206311878.

The spelling of 1898427900 in words is "one billion, eight hundred ninety-eight million, four hundred twenty-seven thousand, nine hundred".