1604012005 has 8 divisors (see below), whose sum is σ = 1965768192. Its totient is φ = 1255907088.

The previous prime is 1604011993. The next prime is 1604012041. The reversal of 1604012005 is 5002104061.

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 1604012005 - 2¹⁷ = 1603880933 is a prime.

It is a Duffinian number.

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, 3412557 + ... + 3413026.

It is an arithmetic number, because the mean of its divisors is an integer number (245721024).

Almost surely, 2^1604012005 is an apocalyptic number.

It is an amenable number.

1604012005 is a deficient number, since it is larger than the sum of its proper divisors (361756187).

1604012005 is an equidigital number, since it uses as much as digits as its factorization.

1604012005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6825635.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1604012005 is about 40050.1186639940. The cubic root of 1604012005 is about 1170.5838771272.

Adding to 1604012005 its reverse (5002104061), we get a palindrome (6606116066).

The spelling of 1604012005 in words is "one billion, six hundred four million, twelve thousand, five".