1798122240 has 504 divisors, whose sum is σ = 6755894208. Its totient is φ = 457850880.

The previous prime is 1798122211. The next prime is 1798122253. The reversal of 1798122240 is 422218971.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1798122195 and 1798122204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 38257897 + ... + 38257943.

It is an arithmetic number, because the mean of its divisors is an integer number (13404552).

Almost surely, 2^1798122240 is an apocalyptic number.

1798122240 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 1798122240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3377947104).

1798122240 is an abundant number, since it is smaller than the sum of its proper divisors (4957771968).

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

1798122240 is an frugal number, since it uses more digits than its factorization.

1798122240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127 (or 98 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 1798122240 is about 42404.2714829532. The cubic root of 1798122240 is about 1216.0172550645.

The spelling of 1798122240 in words is "one billion, seven hundred ninety-eight million, one hundred twenty-two thousand, two hundred forty".