243226338919 has 2 divisors, whose sum is σ = 243226338920. Its totient is φ = 243226338918.

The previous prime is 243226338877. The next prime is 243226338931. The reversal of 243226338919 is 919833622342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243226338919 - 2¹⁹ = 243225814631 is a prime.

It is a super-2 number, since 2×243226338919² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243226336919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121613169459 + 121613169460.

It is an arithmetic number, because the mean of its divisors is an integer number (121613169460).

Almost surely, 2^243226338919 is an apocalyptic number.

243226338919 is a deficient number, since it is larger than the sum of its proper divisors (1).

243226338919 is an equidigital number, since it uses as much as digits as its factorization.

243226338919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3359232, while the sum is 52.

The spelling of 243226338919 in words is "two hundred forty-three billion, two hundred twenty-six million, three hundred thirty-eight thousand, nine hundred nineteen".