1604495533 has 2 divisors, whose sum is σ = 1604495534. Its totient is φ = 1604495532.

The previous prime is 1604495531. The next prime is 1604495537. The reversal of 1604495533 is 3355944061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 943902729 + 660592804 = 30723^2 + 25702^2 .

It is a cyclic number.

It is not a de Polignac number, because 1604495533 - 2¹ = 1604495531 is a prime.

Together with 1604495531, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1604495531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 802247766 + 802247767.

It is an arithmetic number, because the mean of its divisors is an integer number (802247767).

Almost surely, 2^1604495533 is an apocalyptic number.

It is an amenable number.

1604495533 is a deficient number, since it is larger than the sum of its proper divisors (1).

1604495533 is an equidigital number, since it uses as much as digits as its factorization.

1604495533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 194400, while the sum is 40.

The square root of 1604495533 is about 40056.1547455569. The cubic root of 1604495533 is about 1170.7014891347.

The spelling of 1604495533 in words is "one billion, six hundred four million, four hundred ninety-five thousand, five hundred thirty-three".