1223538354019 has 2 divisors, whose sum is σ = 1223538354020. Its totient is φ = 1223538354018.

The previous prime is 1223538354007. The next prime is 1223538354023. The reversal of 1223538354019 is 9104538353221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1223538354019 - 2⁹ = 1223538353507 is a prime.

It is a super-2 number, since 2×1223538354019² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1223538354019.

It is not a weakly prime, because it can be changed into another prime (1223538354719) 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 as a sum of consecutive naturals, namely, 611769177009 + 611769177010.

It is an arithmetic number, because the mean of its divisors is an integer number (611769177010).

Almost surely, 2^{1223538354019} is an apocalyptic number.

1223538354019 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223538354019 is an equidigital number, since it uses as much as digits as its factorization.

1223538354019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 777600, while the sum is 46.

The spelling of 1223538354019 in words is "one trillion, two hundred twenty-three billion, five hundred thirty-eight million, three hundred fifty-four thousand, nineteen".