1605332411 has 2 divisors, whose sum is σ = 1605332412. Its totient is φ = 1605332410.

The previous prime is 1605332371. The next prime is 1605332419. The reversal of 1605332411 is 1142335061.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1605332411 - 2⁶ = 1605332347 is a prime.

It is not a weakly prime, because it can be changed into another prime (1605332419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 802666205 + 802666206.

It is an arithmetic number, because the mean of its divisors is an integer number (802666206).

Almost surely, 2^1605332411 is an apocalyptic number.

1605332411 is a deficient number, since it is larger than the sum of its proper divisors (1).

1605332411 is an equidigital number, since it uses as much as digits as its factorization.

1605332411 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 1605332411 is about 40066.5996935103. The cubic root of 1605332411 is about 1170.9049931878.

Adding to 1605332411 its reverse (1142335061), we get a palindrome (2747667472).

The spelling of 1605332411 in words is "one billion, six hundred five million, three hundred thirty-two thousand, four hundred eleven".