2001620133 has 16 divisors (see below), whose sum is σ = 2988004800. Its totient is φ = 1324224720.

The previous prime is 2001620119. The next prime is 2001620147. The reversal of 2001620133 is 3310261002.

It is an interprime number because it is at equal distance from previous prime (2001620119) and next prime (2001620147).

It is not a de Polignac number, because 2001620133 - 2⁹ = 2001619621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001621133) 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 15 ways as a sum of consecutive naturals, for example, 279418 + ... + 286491.

It is an arithmetic number, because the mean of its divisors is an integer number (186750300).

Almost surely, 2^2001620133 is an apocalyptic number.

It is an amenable number.

2001620133 is a deficient number, since it is larger than the sum of its proper divisors (986384667).

2001620133 is a wasteful number, since it uses less digits than its factorization.

2001620133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566049 (or 566043 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 2001620133 is about 44739.4695207710. The cubic root of 2001620133 is about 1260.2611646846.

Adding to 2001620133 its reverse (3310261002), we get a palindrome (5311881135).

The spelling of 2001620133 in words is "two billion, one million, six hundred twenty thousand, one hundred thirty-three".