1128162885 has 32 divisors (see below), whose sum is σ = 1818132480. Its totient is φ = 597350208.

The previous prime is 1128162883. The next prime is 1128162899. The reversal of 1128162885 is 5882618211.

It is not a de Polignac number, because 1128162885 - 2¹ = 1128162883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128162883) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2062182 + ... + 2062728.

It is an arithmetic number, because the mean of its divisors is an integer number (56816640).

Almost surely, 2^1128162885 is an apocalyptic number.

1128162885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1128162885 is a deficient number, since it is larger than the sum of its proper divisors (689969595).

1128162885 is a wasteful number, since it uses less digits than its factorization.

1128162885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297.

The product of its digits is 61440, while the sum is 42.

The square root of 1128162885 is about 33588.1360751084. The cubic root of 1128162885 is about 1041.0156759639.

The spelling of 1128162885 in words is "one billion, one hundred twenty-eight million, one hundred sixty-two thousand, eight hundred eighty-five".