1604412671 has 2 divisors, whose sum is σ = 1604412672. Its totient is φ = 1604412670.

The previous prime is 1604412637. The next prime is 1604412683. The reversal of 1604412671 is 1762144061.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1604412671 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1604412871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 802206335 + 802206336.

It is an arithmetic number, because the mean of its divisors is an integer number (802206336).

Almost surely, 2^1604412671 is an apocalyptic number.

1604412671 is a deficient number, since it is larger than the sum of its proper divisors (1).

1604412671 is an equidigital number, since it uses as much as digits as its factorization.

1604412671 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 1604412671 is about 40055.1204092560. The cubic root of 1604412671 is about 1170.6813356898.

The spelling of 1604412671 in words is "one billion, six hundred four million, four hundred twelve thousand, six hundred seventy-one".