1605130732 has 12 divisors (see below), whose sum is σ = 2811402216. Its totient is φ = 801872960.

The previous prime is 1605130727. The next prime is 1605130733. The reversal of 1605130732 is 2370315061.

It is a self number, because there is not a number n which added to its sum of digits gives 1605130732.

It is not an unprimeable number, because it can be changed into a prime (1605130733) 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 3 ways as a sum of consecutive naturals, for example, 167869 + ... + 177172.

It is an arithmetic number, because the mean of its divisors is an integer number (234283518).

Almost surely, 2^1605130732 is an apocalyptic number.

It is an amenable number.

1605130732 is a deficient number, since it is larger than the sum of its proper divisors (1206271484).

1605130732 is a wasteful number, since it uses less digits than its factorization.

1605130732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346208 (or 346206 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 1605130732 is about 40064.0828174064. The cubic root of 1605130732 is about 1170.8559572714.

Adding to 1605130732 its reverse (2370315061), we get a palindrome (3975445793).

The spelling of 1605130732 in words is "one billion, six hundred five million, one hundred thirty thousand, seven hundred thirty-two".