338544813 has 4 divisors (see below), whose sum is σ = 451393088. Its totient is φ = 225696540.

The previous prime is 338544803. The next prime is 338544821. The reversal of 338544813 is 318445833.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 338544813 - 2¹⁰ = 338543789 is a prime.

It is a super-2 number, since 2×338544813² = 229225180818409938, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (338544803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56424133 + ... + 56424138.

It is an arithmetic number, because the mean of its divisors is an integer number (112848272).

Almost surely, 2^338544813 is an apocalyptic number.

It is an amenable number.

338544813 is a deficient number, since it is larger than the sum of its proper divisors (112848275).

338544813 is a wasteful number, since it uses less digits than its factorization.

338544813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112848274.

The product of its digits is 138240, while the sum is 39.

The square root of 338544813 is about 18399.5873051544. The cubic root of 338544813 is about 696.9560430538.

The spelling of 338544813 in words is "three hundred thirty-eight million, five hundred forty-four thousand, eight hundred thirteen".