2001604530 has 16 divisors (see below), whose sum is σ = 4803850944. Its totient is φ = 533761200.

The previous prime is 2001604487. The next prime is 2001604537. The reversal of 2001604530 is 354061002.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2001604497 and 2001604506.

It is not an unprimeable number, because it can be changed into a prime (2001604537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33360046 + ... + 33360105.

It is an arithmetic number, because the mean of its divisors is an integer number (300240684).

Almost surely, 2^2001604530 is an apocalyptic number.

2001604530 is an abundant number, since it is smaller than the sum of its proper divisors (2802246414).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2001604530 is a wasteful number, since it uses less digits than its factorization.

2001604530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66720161.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 2001604530 is about 44739.2951442018. The cubic root of 2001604530 is about 1260.2578900196.

Adding to 2001604530 its reverse (354061002), we get a palindrome (2355665532).

The spelling of 2001604530 in words is "two billion, one million, six hundred four thousand, five hundred thirty".