1604744347 has 2 divisors, whose sum is σ = 1604744348. Its totient is φ = 1604744346.

The previous prime is 1604744333. The next prime is 1604744369. The reversal of 1604744347 is 7434474061.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1604744347 is a prime.

It is not a weakly prime, because it can be changed into another prime (1604744147) 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, 802372173 + 802372174.

It is an arithmetic number, because the mean of its divisors is an integer number (802372174).

Almost surely, 2^1604744347 is an apocalyptic number.

1604744347 is a deficient number, since it is larger than the sum of its proper divisors (1).

1604744347 is an equidigital number, since it uses as much as digits as its factorization.

1604744347 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 225792, while the sum is 40.

The square root of 1604744347 is about 40059.2604400031. The cubic root of 1604744347 is about 1170.7620007532.

The spelling of 1604744347 in words is "one billion, six hundred four million, seven hundred forty-four thousand, three hundred forty-seven".