1604003129 has 2 divisors, whose sum is σ = 1604003130. Its totient is φ = 1604003128.

The previous prime is 1604003033. The next prime is 1604003171. The reversal of 1604003129 is 9213004061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1104033529 + 499969600 = 33227^2 + 22360^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1604003129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1604003098 and 1604003107.

It is not a weakly prime, because it can be changed into another prime (1604003179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 802001564 + 802001565.

It is an arithmetic number, because the mean of its divisors is an integer number (802001565).

Almost surely, 2^1604003129 is an apocalyptic number.

It is an amenable number.

1604003129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1604003129 is an equidigital number, since it uses as much as digits as its factorization.

1604003129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 1604003129 is about 40050.0078526834. The cubic root of 1604003129 is about 1170.5817179327.

The spelling of 1604003129 in words is "one billion, six hundred four million, three thousand, one hundred twenty-nine".