1605135752 has 16 divisors (see below), whose sum is σ = 3283232400. Its totient is φ = 729607120.

The previous prime is 1605135743. The next prime is 1605135811. The reversal of 1605135752 is 2575315061.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 9120002 + ... + 9120177.

It is an arithmetic number, because the mean of its divisors is an integer number (205202025).

Almost surely, 2^1605135752 is an apocalyptic number.

It is an amenable number.

1605135752 is an abundant number, since it is smaller than the sum of its proper divisors (1678096648).

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

1605135752 is a wasteful number, since it uses less digits than its factorization.

1605135752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18240196 (or 18240192 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 35.

The square root of 1605135752 is about 40064.1454669883. The cubic root of 1605135752 is about 1170.8571778761.

The spelling of 1605135752 in words is "one billion, six hundred five million, one hundred thirty-five thousand, seven hundred fifty-two".