1128978968 has 16 divisors (see below), whose sum is σ = 2279669280. Its totient is φ = 521067168.

The previous prime is 1128978941. The next prime is 1128978997. The reversal of 1128978968 is 8698798211.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5427680 + ... + 5427887.

It is an arithmetic number, because the mean of its divisors is an integer number (142479330).

Almost surely, 2^1128978968 is an apocalyptic number.

It is an amenable number.

1128978968 is an abundant number, since it is smaller than the sum of its proper divisors (1150690312).

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

1128978968 is a wasteful number, since it uses less digits than its factorization.

1128978968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10855586 (or 10855582 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 59.

The square root of 1128978968 is about 33600.2822607192. The cubic root of 1128978968 is about 1041.2666298054.

The spelling of 1128978968 in words is "one billion, one hundred twenty-eight million, nine hundred seventy-eight thousand, nine hundred sixty-eight".