1605341612 has 12 divisors (see below), whose sum is σ = 3210683280. Its totient is φ = 688003536.

The previous prime is 1605341611. The next prime is 1605341653. The reversal of 1605341612 is 2161435061.

It is a happy number.

1605341612 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1605341611) 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, 28666787 + ... + 28666842.

It is an arithmetic number, because the mean of its divisors is an integer number (267556940).

Almost surely, 2^1605341612 is an apocalyptic number.

It is an amenable number.

1605341612 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1605341612 is a wasteful number, since it uses less digits than its factorization.

1605341612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57333640 (or 57333638 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 1605341612 is about 40066.7145146692. The cubic root of 1605341612 is about 1170.9072302066.

Adding to 1605341612 its reverse (2161435061), we get a palindrome (3766776673).

The spelling of 1605341612 in words is "one billion, six hundred five million, three hundred forty-one thousand, six hundred twelve".