1898220800 has 162 divisors, whose sum is σ = 5466380598. Its totient is φ = 650711040.

The previous prime is 1898220787. The next prime is 1898220803. The reversal of 1898220800 is 80228981.

It can be written as a sum of positive squares in 3 ways, for example, as 50176 + 1898170624 = 224^2 + 43568^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1898220803) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 310574 + ... + 316626.

Almost surely, 2^1898220800 is an apocalyptic number.

1898220800 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 1898220800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2733190299).

1898220800 is an abundant number, since it is smaller than the sum of its proper divisors (3568159798).

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

1898220800 is an equidigital number, since it uses as much as digits as its factorization.

1898220800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6093 (or 6067 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 38.

The square root of 1898220800 is about 43568.5758316702. The cubic root of 1898220800 is about 1238.1756036121.

The spelling of 1898220800 in words is "one billion, eight hundred ninety-eight million, two hundred twenty thousand, eight hundred".