1604299859 has 2 divisors, whose sum is σ = 1604299860. Its totient is φ = 1604299858.

The previous prime is 1604299813. The next prime is 1604299861. The reversal of 1604299859 is 9589924061.

It is a strong prime.

It is an emirp because it is prime and its reverse (9589924061) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1604299859 is a prime.

Together with 1604299861, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1604299859.

It is not a weakly prime, because it can be changed into another prime (1604199859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 802149929 + 802149930.

It is an arithmetic number, because the mean of its divisors is an integer number (802149930).

Almost surely, 2^1604299859 is an apocalyptic number.

1604299859 is a deficient number, since it is larger than the sum of its proper divisors (1).

1604299859 is an equidigital number, since it uses as much as digits as its factorization.

1604299859 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1399680, while the sum is 53.

The square root of 1604299859 is about 40053.7121750282. The cubic root of 1604299859 is about 1170.6538967811.

The spelling of 1604299859 in words is "one billion, six hundred four million, two hundred ninety-nine thousand, eight hundred fifty-nine".