1798693680 has 160 divisors (see below), whose sum is σ = 6592435200. Its totient is φ = 396942336.

The previous prime is 1798693661. The next prime is 1798693681. The reversal of 1798693680 is 863968971.

It is a self number, because there is not a number n which added to its sum of digits gives 1798693680.

It is not an unprimeable number, because it can be changed into a prime (1798693681) 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, 30261 + ... + 67179.

It is an arithmetic number, because the mean of its divisors is an integer number (41202720).

Almost surely, 2^1798693680 is an apocalyptic number.

1798693680 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 1798693680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3296217600).

1798693680 is an abundant number, since it is smaller than the sum of its proper divisors (4793741520).

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

1798693680 is a wasteful number, since it uses less digits than its factorization.

1798693680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36971 (or 36965 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 57.

The square root of 1798693680 is about 42411.0089481493. The cubic root of 1798693680 is about 1216.1460574501.

The spelling of 1798693680 in words is "one billion, seven hundred ninety-eight million, six hundred ninety-three thousand, six hundred eighty".