980778788 has 48 divisors (see below), whose sum is σ = 1957810176. Its totient is φ = 425552160.

The previous prime is 980778779. The next prime is 980778793. The reversal of 980778788 is 887877089.

It is a self number, because there is not a number n which added to its sum of digits gives 980778788.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 872795 + ... + 873917.

It is an arithmetic number, because the mean of its divisors is an integer number (40787712).

Almost surely, 2^980778788 is an apocalyptic number.

It is an amenable number.

980778788 is a deficient number, since it is larger than the sum of its proper divisors (977031388).

980778788 is a wasteful number, since it uses less digits than its factorization.

980778788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2024 (or 2022 counting only the distinct ones).

The product of its (nonzero) digits is 12644352, while the sum is 62.

The square root of 980778788 is about 31317.3879498275. The cubic root of 980778788 is about 993.5514347249.

The spelling of 980778788 in words is "nine hundred eighty million, seven hundred seventy-eight thousand, seven hundred eighty-eight".