1604325401 has 16 divisors (see below), whose sum is σ = 1971087360. Its totient is φ = 1275037200.

The previous prime is 1604325391. The next prime is 1604325403. The reversal of 1604325401 is 1045234061.

It is a cyclic number.

It is not a de Polignac number, because 1604325401 - 2¹⁰ = 1604324377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1604325403) 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, 122075 + ... + 134576.

It is an arithmetic number, because the mean of its divisors is an integer number (123192960).

Almost surely, 2^1604325401 is an apocalyptic number.

It is an amenable number.

1604325401 is a deficient number, since it is larger than the sum of its proper divisors (366761959).

1604325401 is a wasteful number, since it uses less digits than its factorization.

1604325401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256724.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 1604325401 is about 40054.0310206101. The cubic root of 1604325401 is about 1170.6601093943.

Adding to 1604325401 its reverse (1045234061), we get a palindrome (2649559462).

The spelling of 1604325401 in words is "one billion, six hundred four million, three hundred twenty-five thousand, four hundred one".