1603128345 has 48 divisors (see below), whose sum is σ = 3213322560. Its totient is φ = 676480896.

The previous prime is 1603128343. The next prime is 1603128349. The reversal of 1603128345 is 5438213061.

It is not a de Polignac number, because 1603128345 - 2¹ = 1603128343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1603128343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 74335 + ... + 93444.

It is an arithmetic number, because the mean of its divisors is an integer number (66944220).

Almost surely, 2^1603128345 is an apocalyptic number.

1603128345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1603128345 is an abundant number, since it is smaller than the sum of its proper divisors (1610194215).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1603128345 is a wasteful number, since it uses less digits than its factorization.

1603128345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167814 (or 167807 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 1603128345 is about 40039.0852168228. The cubic root of 1603128345 is about 1170.3688770407.

The spelling of 1603128345 in words is "one billion, six hundred three million, one hundred twenty-eight thousand, three hundred forty-five".