2001100436 has 12 divisors (see below), whose sum is σ = 3568000212. Its totient is φ = 981671808.

The previous prime is 2001100433. The next prime is 2001100483. The reversal of 2001100436 is 6340011002.

It can be written as a sum of positive squares in 2 ways, for example, as 684136336 + 1316964100 = 26156^2 + 36290^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001100433) 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 3 ways as a sum of consecutive naturals, for example, 4719365 + ... + 4719788.

It is an arithmetic number, because the mean of its divisors is an integer number (297333351).

Almost surely, 2^2001100436 is an apocalyptic number.

It is an amenable number.

2001100436 is a deficient number, since it is larger than the sum of its proper divisors (1566899776).

2001100436 is a wasteful number, since it uses less digits than its factorization.

2001100436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9439210 (or 9439208 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2001100436 is about 44733.6611065985. The cubic root of 2001100436 is about 1260.1520846070.

Adding to 2001100436 its reverse (6340011002), we get a palindrome (8341111438).

The spelling of 2001100436 in words is "two billion, one million, one hundred thousand, four hundred thirty-six".