2001271930 has 32 divisors (see below), whose sum is σ = 4166515584. Its totient is φ = 677881536.

The previous prime is 2001271927. The next prime is 2001271939. The reversal of 2001271930 is 391721002.

It is a junction number, because it is equal to n+sod(n) for n = 2001271895 and 2001271904.

It is not an unprimeable number, because it can be changed into a prime (2001271939) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 166417 + ... + 178036.

It is an arithmetic number, because the mean of its divisors is an integer number (130203612).

Almost surely, 2^2001271930 is an apocalyptic number.

2001271930 is an abundant number, since it is smaller than the sum of its proper divisors (2165243654).

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

2001271930 is a wasteful number, since it uses less digits than its factorization.

2001271930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344550.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 2001271930 is about 44735.5778994750. The cubic root of 2001271930 is about 1260.1880818587.

Adding to 2001271930 its reverse (391721002), we get a palindrome (2392992932).

The spelling of 2001271930 in words is "two billion, one million, two hundred seventy-one thousand, nine hundred thirty".