1604498165 has 8 divisors (see below), whose sum is σ = 2038656600. Its totient is φ = 1208092672.

The previous prime is 1604498153. The next prime is 1604498177. The reversal of 1604498165 is 5618944061.

It is an interprime number because it is at equal distance from previous prime (1604498153) and next prime (1604498177).

It can be written as a sum of positive squares in 4 ways, for example, as 224970001 + 1379528164 = 14999^2 + 37142^2 .

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 1604498165 - 2³⁰ = 530756341 is a prime.

It is a super-2 number, since 2×1604498165² = 5148828722976734450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9438140 + ... + 9438309.

It is an arithmetic number, because the mean of its divisors is an integer number (254832075).

Almost surely, 2^1604498165 is an apocalyptic number.

It is an amenable number.

1604498165 is a deficient number, since it is larger than the sum of its proper divisors (434158435).

1604498165 is a wasteful number, since it uses less digits than its factorization.

1604498165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18876471.

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 1604498165 is about 40056.1875994209. The cubic root of 1604498165 is about 1170.7021292704.

The spelling of 1604498165 in words is "one billion, six hundred four million, four hundred ninety-eight thousand, one hundred sixty-five".