1604000001 has 4 divisors (see below), whose sum is σ = 2138666672. Its totient is φ = 1069333332.

The previous prime is 1603999961. The next prime is 1604000023. The reversal of 1604000001 is 1000004061.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-1604000001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1604000081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 267333331 + ... + 267333336.

It is an arithmetic number, because the mean of its divisors is an integer number (534666668).

Almost surely, 2^1604000001 is an apocalyptic number.

It is an amenable number.

1604000001 is a deficient number, since it is larger than the sum of its proper divisors (534666671).

1604000001 is an equidigital number, since it uses as much as digits as its factorization.

1604000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534666670.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1604000001 is about 40049.9688014860. The cubic root of 1604000001 is about 1170.5809570069.

Adding to 1604000001 its reverse (1000004061), we get a palindrome (2604004062).

The spelling of 1604000001 in words is "one billion, six hundred four million, one", and thus it is an aban number.