1604402027 has 2 divisors, whose sum is σ = 1604402028. Its totient is φ = 1604402026.

The previous prime is 1604402017. The next prime is 1604402071. The reversal of 1604402027 is 7202044061.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1604402027 - 2⁶ = 1604401963 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1604401987 and 1604402005.

It is not a weakly prime, because it can be changed into another prime (1604402017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 802201013 + 802201014.

It is an arithmetic number, because the mean of its divisors is an integer number (802201014).

Almost surely, 2^1604402027 is an apocalyptic number.

1604402027 is a deficient number, since it is larger than the sum of its proper divisors (1).

1604402027 is an equidigital number, since it uses as much as digits as its factorization.

1604402027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 1604402027 is about 40054.9875421276. The cubic root of 1604402027 is about 1170.6787468381.

Adding to 1604402027 its reverse (7202044061), we get a palindrome (8806446088).

The spelling of 1604402027 in words is "one billion, six hundred four million, four hundred two thousand, twenty-seven".