2013505944 has 32 divisors (see below), whose sum is σ = 5140869120. Its totient is φ = 656888096.

The previous prime is 2013505937. The next prime is 2013505957. The reversal of 2013505944 is 4495053102.

It is a super-2 number, since 2×2013505944² = 8108412373046662272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 891384 + ... + 893639.

It is an arithmetic number, because the mean of its divisors is an integer number (160652160).

Almost surely, 2^2013505944 is an apocalyptic number.

2013505944 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2013505944 is an abundant number, since it is smaller than the sum of its proper divisors (3127363176).

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

2013505944 is a wasteful number, since it uses less digits than its factorization.

2013505944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1785079 (or 1785075 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 2013505944 is about 44872.1065251009. The cubic root of 2013505944 is about 1262.7507602938.

The spelling of 2013505944 in words is "two billion, thirteen million, five hundred five thousand, nine hundred forty-four".