1128185167 has 16 divisors (see below), whose sum is σ = 1215495360. Its totient is φ = 1044375552.

The previous prime is 1128185147. The next prime is 1128185171. The reversal of 1128185167 is 7615818211.

It is a cyclic number.

It is not a de Polignac number, because 1128185167 - 2¹⁹ = 1127660879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128185147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160809 + ... + 167677.

It is an arithmetic number, because the mean of its divisors is an integer number (75968460).

Almost surely, 2^1128185167 is an apocalyptic number.

1128185167 is a deficient number, since it is larger than the sum of its proper divisors (87310193).

1128185167 is a wasteful number, since it uses less digits than its factorization.

1128185167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7122.

The product of its digits is 26880, while the sum is 40.

The square root of 1128185167 is about 33588.4677679706. The cubic root of 1128185167 is about 1041.0225295128.

The spelling of 1128185167 in words is "one billion, one hundred twenty-eight million, one hundred eighty-five thousand, one hundred sixty-seven".