1604305541 has 2 divisors, whose sum is σ = 1604305542. Its totient is φ = 1604305540.

The previous prime is 1604305519. The next prime is 1604305543. The reversal of 1604305541 is 1455034061.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 956603041 + 647702500 = 30929^2 + 25450^2 .

It is a cyclic number.

It is not a de Polignac number, because 1604305541 - 2⁶ = 1604305477 is a prime.

It is a Sophie Germain prime.

Together with 1604305543, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1604305543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 802152770 + 802152771.

It is an arithmetic number, because the mean of its divisors is an integer number (802152771).

Almost surely, 2^1604305541 is an apocalyptic number.

It is an amenable number.

1604305541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1604305541 is an equidigital number, since it uses as much as digits as its factorization.

1604305541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 1604305541 is about 40053.7831047206. The cubic root of 1604305541 is about 1170.6552788269.

The spelling of 1604305541 in words is "one billion, six hundred four million, three hundred five thousand, five hundred forty-one".