1604372149 has 2 divisors, whose sum is σ = 1604372150. Its totient is φ = 1604372148.

The previous prime is 1604372129. The next prime is 1604372227. The reversal of 1604372149 is 9412734061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1418049649 + 186322500 = 37657^2 + 13650^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1604372149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1604372129) 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, 802186074 + 802186075.

It is an arithmetic number, because the mean of its divisors is an integer number (802186075).

Almost surely, 2^1604372149 is an apocalyptic number.

It is an amenable number.

1604372149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1604372149 is an equidigital number, since it uses as much as digits as its factorization.

1604372149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 1604372149 is about 40054.6145780982. The cubic root of 1604372149 is about 1170.6714797990.

The spelling of 1604372149 in words is "one billion, six hundred four million, three hundred seventy-two thousand, one hundred forty-nine".