1128199012 has 12 divisors (see below), whose sum is σ = 1992800880. Its totient is φ = 558827336.

The previous prime is 1128199001. The next prime is 1128199019. The reversal of 1128199012 is 2109918211.

It is a super-2 number, since 2×1128199012² = 2545666021355552288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1128199019) by changing a digit.

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, 1317562 + ... + 1318417.

It is an arithmetic number, because the mean of its divisors is an integer number (166066740).

Almost surely, 2^1128199012 is an apocalyptic number.

It is an amenable number.

1128199012 is a deficient number, since it is larger than the sum of its proper divisors (864601868).

1128199012 is a wasteful number, since it uses less digits than its factorization.

1128199012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2636090 (or 2636088 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 34.

The square root of 1128199012 is about 33588.6738648611. The cubic root of 1128199012 is about 1041.0267879443.

The spelling of 1128199012 in words is "one billion, one hundred twenty-eight million, one hundred ninety-nine thousand, twelve".