1128249159 has 8 divisors (see below), whose sum is σ = 1515816192. Its totient is φ = 746424120.

The previous prime is 1128249139. The next prime is 1128249167. The reversal of 1128249159 is 9519428211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1128249159 - 2²⁷ = 994031431 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 1128249159.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128249119) 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 7 ways as a sum of consecutive naturals, for example, 1435039 + ... + 1435824.

It is an arithmetic number, because the mean of its divisors is an integer number (189477024).

Almost surely, 2^1128249159 is an apocalyptic number.

1128249159 is a deficient number, since it is larger than the sum of its proper divisors (387567033).

1128249159 is a wasteful number, since it uses less digits than its factorization.

1128249159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2870997.

The product of its digits is 51840, while the sum is 42.

The square root of 1128249159 is about 33589.4203433164. The cubic root of 1128249159 is about 1041.0422118179.

The spelling of 1128249159 in words is "one billion, one hundred twenty-eight million, two hundred forty-nine thousand, one hundred fifty-nine".