1128781748 has 12 divisors (see below), whose sum is σ = 1989580320. Its totient is φ = 560330232.

The previous prime is 1128781739. The next prime is 1128781799. The reversal of 1128781748 is 8471878211.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1014536 + ... + 1015647.

It is an arithmetic number, because the mean of its divisors is an integer number (165798360).

Almost surely, 2^1128781748 is an apocalyptic number.

It is an amenable number.

1128781748 is a deficient number, since it is larger than the sum of its proper divisors (860798572).

1128781748 is a wasteful number, since it uses less digits than its factorization.

1128781748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2030326 (or 2030324 counting only the distinct ones).

The product of its digits is 200704, while the sum is 47.

The square root of 1128781748 is about 33597.3473357645. The cubic root of 1128781748 is about 1041.2059937293.

The spelling of 1128781748 in words is "one billion, one hundred twenty-eight million, seven hundred eighty-one thousand, seven hundred forty-eight".