1128249959 has 8 divisors (see below), whose sum is σ = 1181219760. Its totient is φ = 1076217856.

The previous prime is 1128249943. The next prime is 1128249973. The reversal of 1128249959 is 9599428211.

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

It is a cyclic number.

It is not a de Polignac number, because 1128249959 - 2⁴ = 1128249943 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 (1128249989) 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, 231962 + ... + 236775.

It is an arithmetic number, because the mean of its divisors is an integer number (147652470).

Almost surely, 2^1128249959 is an apocalyptic number.

1128249959 is a deficient number, since it is larger than the sum of its proper divisors (52969801).

1128249959 is an equidigital number, since it uses as much as digits as its factorization.

1128249959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468849.

The product of its digits is 466560, while the sum is 50.

The square root of 1128249959 is about 33589.4322518259. The cubic root of 1128249959 is about 1041.0424578728.

The spelling of 1128249959 in words is "one billion, one hundred twenty-eight million, two hundred forty-nine thousand, nine hundred fifty-nine".