1605341613 has 16 divisors (see below), whose sum is σ = 2173402496. Its totient is φ = 1053803520.

The previous prime is 1605341611. The next prime is 1605341653. The reversal of 1605341613 is 3161435061.

It is not a de Polignac number, because 1605341613 - 2¹ = 1605341611 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1605341611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132381 + ... + 143997.

It is an arithmetic number, because the mean of its divisors is an integer number (135837656).

Almost surely, 2^1605341613 is an apocalyptic number.

It is an amenable number.

1605341613 is a deficient number, since it is larger than the sum of its proper divisors (568060883).

1605341613 is a wasteful number, since it uses less digits than its factorization.

1605341613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12324.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 1605341613 is about 40066.7145271483. The cubic root of 1605341613 is about 1170.9072304497.

Adding to 1605341613 its reverse (3161435061), we get a palindrome (4766776674).

The spelling of 1605341613 in words is "one billion, six hundred five million, three hundred forty-one thousand, six hundred thirteen".