1980517008 has 40 divisors (see below), whose sum is σ = 5117945248. Its totient is φ = 659964672.

The previous prime is 1980516971. The next prime is 1980517087. The reversal of 1980517008 is 8007150891.

It is a Cunningham number, because it is equal to 44503²-1.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263316 + ... + 270732.

Almost surely, 2^1980517008 is an apocalyptic number.

It is an amenable number.

1980517008 is an abundant number, since it is smaller than the sum of its proper divisors (3137428240).

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

1980517008 is a wasteful number, since it uses less digits than its factorization.

1980517008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12991 (or 12985 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 39.

The square root of 1980517008 is about 44502.9999887648. Note that the first 4 decimals coincide. The cubic root of 1980517008 is about 1255.8165208608.

Adding to 1980517008 its reverse (8007150891), we get a palindrome (9987667899).

The spelling of 1980517008 in words is "one billion, nine hundred eighty million, five hundred seventeen thousand, eight".