1798638080 has 160 divisors (see below), whose sum is σ = 4693802256. Its totient is φ = 658243584.

The previous prime is 1798638071. The next prime is 1798638119. The reversal of 1798638080 is 808368971.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 930982144 + 867655936 = 30512^2 + 29456^2 .

It is a tau number, because it is divible by the number of its divisors (160).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1609682 + ... + 1610798.

Almost surely, 2^1798638080 is an apocalyptic number.

1798638080 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 1798638080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2346901128).

1798638080 is an abundant number, since it is smaller than the sum of its proper divisors (2895164176).

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

1798638080 is a wasteful number, since it uses less digits than its factorization.

1798638080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1194 (or 1178 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 50.

The square root of 1798638080 is about 42410.3534529011. The cubic root of 1798638080 is about 1216.1335264268.

The spelling of 1798638080 in words is "one billion, seven hundred ninety-eight million, six hundred thirty-eight thousand, eighty".