243226338894 has 128 divisors (see below), whose sum is σ = 681993768960. Its totient is φ = 62414431200.

The previous prime is 243226338877. The next prime is 243226338919. The reversal of 243226338894 is 498833622342.

243226338894 is a `hidden beast` number, since 2 + 4 + 3 + 226 + 338 + 89 + 4 = 666.

243226338894 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 243226338894.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 7272 + ... + 697499.

It is an arithmetic number, because the mean of its divisors is an integer number (5328076320).

Almost surely, 2^243226338894 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243226338894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (340996884480).

243226338894 is an abundant number, since it is smaller than the sum of its proper divisors (438767430066).

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

243226338894 is a wasteful number, since it uses less digits than its factorization.

243226338894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704883 (or 704877 counting only the distinct ones).

The product of its digits is 11943936, while the sum is 54.

The spelling of 243226338894 in words is "two hundred forty-three billion, two hundred twenty-six million, three hundred thirty-eight thousand, eight hundred ninety-four".