1604344135 has 8 divisors (see below), whose sum is σ = 2026540080. Its totient is φ = 1215923904.

The previous prime is 1604344129. The next prime is 1604344151. The reversal of 1604344135 is 5314434061.

It is a happy number.

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 1604344135 - 2³ = 1604344127 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1604344097 and 1604344106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8443822 + ... + 8444011.

It is an arithmetic number, because the mean of its divisors is an integer number (253317510).

Almost surely, 2^1604344135 is an apocalyptic number.

1604344135 is a deficient number, since it is larger than the sum of its proper divisors (422195945).

1604344135 is a wasteful number, since it uses less digits than its factorization.

1604344135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16887857.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 1604344135 is about 40054.2648790363. The cubic root of 1604344135 is about 1170.6646660470.

Adding to 1604344135 its reverse (5314434061), we get a palindrome (6918778196).

The spelling of 1604344135 in words is "one billion, six hundred four million, three hundred forty-four thousand, one hundred thirty-five".