1604074243 has 2 divisors, whose sum is σ = 1604074244. Its totient is φ = 1604074242.

The previous prime is 1604074189. The next prime is 1604074247. The reversal of 1604074243 is 3424704061.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1604074243 is a prime.

It is not a weakly prime, because it can be changed into another prime (1604074247) 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, 802037121 + 802037122.

It is an arithmetic number, because the mean of its divisors is an integer number (802037122).

Almost surely, 2^1604074243 is an apocalyptic number.

1604074243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1604074243 is an equidigital number, since it uses as much as digits as its factorization.

1604074243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 1604074243 is about 40050.8956579001. The cubic root of 1604074243 is about 1170.5990170506.

The spelling of 1604074243 in words is "one billion, six hundred four million, seventy-four thousand, two hundred forty-three".