1790816980 has 24 divisors (see below), whose sum is σ = 3772743912. Its totient is φ = 714035712.

The previous prime is 1790816977. The next prime is 1790816987. The reversal of 1790816980 is 896180971.

It can be written as a sum of positive squares in 4 ways, for example, as 40398736 + 1750418244 = 6356^2 + 41838^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1790816987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136777 + ... + 149296.

It is an arithmetic number, because the mean of its divisors is an integer number (157197663).

Almost surely, 2^1790816980 is an apocalyptic number.

1790816980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1790816980 is an abundant number, since it is smaller than the sum of its proper divisors (1981926932).

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

1790816980 is a wasteful number, since it uses less digits than its factorization.

1790816980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286395 (or 286393 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 49.

The square root of 1790816980 is about 42318.0455597845. The cubic root of 1790816980 is about 1214.3682423000.

The spelling of 1790816980 in words is "one billion, seven hundred ninety million, eight hundred sixteen thousand, nine hundred eighty".