1120156785 has 48 divisors (see below), whose sum is σ = 2138011200. Its totient is φ = 538005120.

The previous prime is 1120156783. The next prime is 1120156789. The reversal of 1120156785 is 5876510211.

1120156785 is a `hidden beast` number, since 1 + 12 + 0 + 1 + 567 + 85 = 666.

It is not a de Polignac number, because 1120156785 - 2¹ = 1120156783 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1120156783) 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 47 ways as a sum of consecutive naturals, for example, 42391 + ... + 63539.

It is an arithmetic number, because the mean of its divisors is an integer number (44541900).

Almost surely, 2^1120156785 is an apocalyptic number.

1120156785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1120156785 is a deficient number, since it is larger than the sum of its proper divisors (1017854415).

1120156785 is a wasteful number, since it uses less digits than its factorization.

1120156785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21278 (or 21275 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 36.

The square root of 1120156785 is about 33468.7434033607. The cubic root of 1120156785 is about 1038.5472767513.

Adding to 1120156785 its reverse (5876510211), we get a palindrome (6996666996).

The spelling of 1120156785 in words is "one billion, one hundred twenty million, one hundred fifty-six thousand, seven hundred eighty-five".