1128505003 has 4 divisors (see below), whose sum is σ = 1128689640. Its totient is φ = 1128320368.

The previous prime is 1128504983. The next prime is 1128505039. The reversal of 1128505003 is 3005058211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3005058211 = 89 ⋅33764699.

It is a cyclic number.

It is not a de Polignac number, because 1128505003 - 2²¹ = 1126407851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1128505073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82825 + ... + 95482.

It is an arithmetic number, because the mean of its divisors is an integer number (282172410).

Almost surely, 2^1128505003 is an apocalyptic number.

1128505003 is a deficient number, since it is larger than the sum of its proper divisors (184637).

1128505003 is an equidigital number, since it uses as much as digits as its factorization.

1128505003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184636.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 1128505003 is about 33593.2285289759. The cubic root of 1128505003 is about 1041.1208954644.

The spelling of 1128505003 in words is "one billion, one hundred twenty-eight million, five hundred five thousand, three".