1604983 has 2 divisors, whose sum is σ = 1604984. Its totient is φ = 1604982.

The previous prime is 1604957. The next prime is 1605001. The reversal of 1604983 is 3894061.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1604983 - 2⁵ = 1604951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1604923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 802491 + 802492.

It is an arithmetic number, because the mean of its divisors is an integer number (802492).

2^1604983 is an apocalyptic number.

1604983 is a deficient number, since it is larger than the sum of its proper divisors (1).

1604983 is an equidigital number, since it uses as much as digits as its factorization.

1604983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 1604983 is about 1266.8792365494. The cubic root of 1604983 is about 117.0820035338.

The spelling of 1604983 in words is "one million, six hundred four thousand, nine hundred eighty-three".