1604172033 has 48 divisors (see below), whose sum is σ = 2616868800. Its totient is φ = 978143040.

The previous prime is 1604172013. The next prime is 1604172043. The reversal of 1604172033 is 3302714061.

1604172033 is a `hidden beast` number, since 1 + 604 + 1 + 7 + 20 + 33 = 666.

It is not a de Polignac number, because 1604172033 - 2⁵ = 1604172001 is a prime.

It is a super-2 number, since 2×1604172033² = 5146735822918706178, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1604171988 and 1604172006.

It is not an unprimeable number, because it can be changed into a prime (1604172013) 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 47 ways as a sum of consecutive naturals, for example, 127903 + ... + 139883.

It is an arithmetic number, because the mean of its divisors is an integer number (54518100).

Almost surely, 2^1604172033 is an apocalyptic number.

It is an amenable number.

1604172033 is a deficient number, since it is larger than the sum of its proper divisors (1012696767).

1604172033 is a wasteful number, since it uses less digits than its factorization.

1604172033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12044 (or 12032 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 1604172033 is about 40052.1164609313. The cubic root of 1604172033 is about 1170.6228045098.

Adding to 1604172033 its reverse (3302714061), we get a palindrome (4906886094).

The spelling of 1604172033 in words is "one billion, six hundred four million, one hundred seventy-two thousand, thirty-three".