1604121843 has 8 divisors (see below), whose sum is σ = 2190995856. Its totient is φ = 1043331200.

The previous prime is 1604121833. The next prime is 1604121847. The reversal of 1604121843 is 3481214061.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1604121843 - 2⁸ = 1604121587 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1604121843.

It is not an unprimeable number, because it can be changed into a prime (1604121847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6520698 + ... + 6520943.

It is an arithmetic number, because the mean of its divisors is an integer number (273874482).

Almost surely, 2^1604121843 is an apocalyptic number.

1604121843 is a deficient number, since it is larger than the sum of its proper divisors (586874013).

1604121843 is a wasteful number, since it uses less digits than its factorization.

1604121843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13041685.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 1604121843 is about 40051.4898973808. The cubic root of 1604121843 is about 1170.6105958917.

The spelling of 1604121843 in words is "one billion, six hundred four million, one hundred twenty-one thousand, eight hundred forty-three".