1128422485 has 16 divisors (see below), whose sum is σ = 1391871600. Its totient is φ = 877602816.

The previous prime is 1128422443. The next prime is 1128422489. The reversal of 1128422485 is 5842248211.

It can be written as a sum of positive squares in 8 ways, for example, as 2283121 + 1126139364 = 1511^2 + 33558^2 .

It is a cyclic number.

It is not a de Polignac number, because 1128422485 - 2²⁹ = 591551573 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128422489) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 347851 + ... + 351079.

It is an arithmetic number, because the mean of its divisors is an integer number (86991975).

Almost surely, 2^1128422485 is an apocalyptic number.

It is an amenable number.

1128422485 is a deficient number, since it is larger than the sum of its proper divisors (263449115).

1128422485 is a wasteful number, since it uses less digits than its factorization.

1128422485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5160.

The product of its digits is 40960, while the sum is 37.

The square root of 1128422485 is about 33592.0003125744. Note that the first 3 decimals coincide. The cubic root of 1128422485 is about 1041.0955187321.

The spelling of 1128422485 in words is "one billion, one hundred twenty-eight million, four hundred twenty-two thousand, four hundred eighty-five".