1604332001 has 2 divisors, whose sum is σ = 1604332002. Its totient is φ = 1604332000.

The previous prime is 1604331977. The next prime is 1604332003. The reversal of 1604332001 is 1002334061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1603922401 + 409600 = 40049^2 + 640^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1604332001 is a prime.

Together with 1604332003, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1604332003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 802166000 + 802166001.

It is an arithmetic number, because the mean of its divisors is an integer number (802166001).

Almost surely, 2^1604332001 is an apocalyptic number.

It is an amenable number.

1604332001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1604332001 is an equidigital number, since it uses as much as digits as its factorization.

1604332001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1604332001 is about 40054.1134092368. The cubic root of 1604332001 is about 1170.6617147099.

Adding to 1604332001 its reverse (1002334061), we get a palindrome (2606666062).

The spelling of 1604332001 in words is "one billion, six hundred four million, three hundred thirty-two thousand, one".