1604667841 has 16 divisors (see below), whose sum is σ = 1919222784. Its totient is φ = 1311791184.

The previous prime is 1604667839. The next prime is 1604667907. The reversal of 1604667841 is 1487664061.

It is a cyclic number.

It is not a de Polignac number, because 1604667841 - 2¹ = 1604667839 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1604667811) 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, 41506 + ... + 70228.

It is an arithmetic number, because the mean of its divisors is an integer number (119951424).

Almost surely, 2^1604667841 is an apocalyptic number.

It is an amenable number.

1604667841 is a deficient number, since it is larger than the sum of its proper divisors (314554943).

1604667841 is a wasteful number, since it uses less digits than its factorization.

1604667841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29100.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 1604667841 is about 40058.3055183317. The cubic root of 1604667841 is about 1170.7433951435.

The spelling of 1604667841 in words is "one billion, six hundred four million, six hundred sixty-seven thousand, eight hundred forty-one".