1798319220 has 96 divisors (see below), whose sum is σ = 5327616000. Its totient is φ = 451972224.

The previous prime is 1798319213. The next prime is 1798319227. The reversal of 1798319220 is 229138971.

It is an interprime number because it is at equal distance from previous prime (1798319213) and next prime (1798319227).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1798319227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 222897 + ... + 230823.

It is an arithmetic number, because the mean of its divisors is an integer number (55496000).

Almost surely, 2^1798319220 is an apocalyptic number.

1798319220 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 1798319220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2663808000).

1798319220 is an abundant number, since it is smaller than the sum of its proper divisors (3529296780).

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

1798319220 is a wasteful number, since it uses less digits than its factorization.

1798319220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8157 (or 8155 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 1798319220 is about 42406.5940627162. The cubic root of 1798319220 is about 1216.0616573725.

The spelling of 1798319220 in words is "one billion, seven hundred ninety-eight million, three hundred nineteen thousand, two hundred twenty".