1604299823 has 16 divisors (see below), whose sum is σ = 1854726720. Its totient is φ = 1359244800.

The previous prime is 1604299813. The next prime is 1604299859. The reversal of 1604299823 is 3289924061.

It is a cyclic number.

It is not a de Polignac number, because 1604299823 - 2¹⁸ = 1604037679 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1604299813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 349463 + ... + 354023.

It is an arithmetic number, because the mean of its divisors is an integer number (115920420).

Almost surely, 2^1604299823 is an apocalyptic number.

1604299823 is a deficient number, since it is larger than the sum of its proper divisors (250426897).

1604299823 is a wasteful number, since it uses less digits than its factorization.

1604299823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5138.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 1604299823 is about 40053.7117256316. The cubic root of 1604299823 is about 1170.6538880248.

The spelling of 1604299823 in words is "one billion, six hundred four million, two hundred ninety-nine thousand, eight hundred twenty-three".