1604241601 has 12 divisors (see below), whose sum is σ = 1706710012. Its totient is φ = 1507615488.

The previous prime is 1604241571. The next prime is 1604241607. The reversal of 1604241601 is 1061424061.

It can be written as a sum of positive squares in 6 ways, for example, as 1112289201 + 491952400 = 33351^2 + 22180^2 .

It is not a de Polignac number, because 1604241601 - 2²⁵ = 1570687169 is a prime.

It is a super-2 number, since 2×1604241601² = 5147182228758086402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1604241607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 208051 + ... + 215623.

Almost surely, 2^1604241601 is an apocalyptic number.

It is an amenable number.

1604241601 is a deficient number, since it is larger than the sum of its proper divisors (102468411).

1604241601 is an equidigital number, since it uses as much as digits as its factorization.

1604241601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8340 (or 8323 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 1604241601 is about 40052.9849199782. The cubic root of 1604241601 is about 1170.6397263670.

Adding to 1604241601 its reverse (1061424061), we get a palindrome (2665665662).

The spelling of 1604241601 in words is "one billion, six hundred four million, two hundred forty-one thousand, six hundred one".