1604242811 has 2 divisors, whose sum is σ = 1604242812. Its totient is φ = 1604242810.

The previous prime is 1604242763. The next prime is 1604242831. The reversal of 1604242811 is 1182424061.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1604242811 - 2¹⁰ = 1604241787 is a prime.

It is not a weakly prime, because it can be changed into another prime (1604242831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 802121405 + 802121406.

It is an arithmetic number, because the mean of its divisors is an integer number (802121406).

Almost surely, 2^1604242811 is an apocalyptic number.

1604242811 is a deficient number, since it is larger than the sum of its proper divisors (1).

1604242811 is an equidigital number, since it uses as much as digits as its factorization.

1604242811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 1604242811 is about 40053.0000249669. Note that the first 4 decimals coincide. The cubic root of 1604242811 is about 1170.6400206854.

Adding to 1604242811 its reverse (1182424061), we get a palindrome (2786666872).

The spelling of 1604242811 in words is "one billion, six hundred four million, two hundred forty-two thousand, eight hundred eleven".