2005403011 has 4 divisors (see below), whose sum is σ = 2123367912. Its totient is φ = 1887438112.

The previous prime is 2005402969. The next prime is 2005403033. The reversal of 2005403011 is 1103045002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2005403011 - 2²⁹ = 1468532099 is a prime.

It is a super-2 number, since 2×2005403011² = 8043282473055732242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2005403311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58982425 + ... + 58982458.

It is an arithmetic number, because the mean of its divisors is an integer number (530841978).

Almost surely, 2^2005403011 is an apocalyptic number.

2005403011 is a deficient number, since it is larger than the sum of its proper divisors (117964901).

2005403011 is a wasteful number, since it uses less digits than its factorization.

2005403011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117964900.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 2005403011 is about 44781.7263066086. The cubic root of 2005403011 is about 1261.0545909663.

Adding to 2005403011 its reverse (1103045002), we get a palindrome (3108448013).

The spelling of 2005403011 in words is "two billion, five million, four hundred three thousand, eleven".