243226338893 has 4 divisors (see below), whose sum is σ = 246652062048. Its totient is φ = 239800615740.

The previous prime is 243226338877. The next prime is 243226338919. The reversal of 243226338893 is 398833622342.

243226338893 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 398833622342 = 2 ⋅199416811171.

It is a cyclic number.

It is not a de Polignac number, because 243226338893 - 2⁴ = 243226338877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243226338293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1712861471 + ... + 1712861612.

It is an arithmetic number, because the mean of its divisors is an integer number (61663015512).

Almost surely, 2^243226338893 is an apocalyptic number.

It is an amenable number.

243226338893 is a deficient number, since it is larger than the sum of its proper divisors (3425723155).

243226338893 is an equidigital number, since it uses as much as digits as its factorization.

243226338893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3425723154.

The product of its digits is 8957952, while the sum is 53.

The spelling of 243226338893 in words is "two hundred forty-three billion, two hundred twenty-six million, three hundred thirty-eight thousand, eight hundred ninety-three".