2013437281 has 4 divisors (see below), whose sum is σ = 2013602500. Its totient is φ = 2013272064.

The previous prime is 2013437263. The next prime is 2013437339. The reversal of 2013437281 is 1827343102.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1091707681 + 921729600 = 33041^2 + 30360^2 .

It is a cyclic number.

It is not a de Polignac number, because 2013437281 - 2²³ = 2005048673 is a prime.

It is a super-2 number, since 2×2013437281² = 8107859369041345922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2013437221) 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, 62736 + ... + 89233.

It is an arithmetic number, because the mean of its divisors is an integer number (503400625).

Almost surely, 2^2013437281 is an apocalyptic number.

It is an amenable number.

2013437281 is a deficient number, since it is larger than the sum of its proper divisors (165219).

2013437281 is a wasteful number, since it uses less digits than its factorization.

2013437281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165218.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 2013437281 is about 44871.3414218920. The cubic root of 2013437281 is about 1262.7364063520.

The spelling of 2013437281 in words is "two billion, thirteen million, four hundred thirty-seven thousand, two hundred eighty-one".