243054430019 has 2 divisors, whose sum is σ = 243054430020. Its totient is φ = 243054430018.

The previous prime is 243054429979. The next prime is 243054430063. The reversal of 243054430019 is 910034450342.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243054430019 - 2⁸ = 243054429763 is a prime.

It is a super-2 number, since 2×243054430019² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (243054433019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121527215009 + 121527215010.

It is an arithmetic number, because the mean of its divisors is an integer number (121527215010).

Almost surely, 2^243054430019 is an apocalyptic number.

243054430019 is a deficient number, since it is larger than the sum of its proper divisors (1).

243054430019 is an equidigital number, since it uses as much as digits as its factorization.

243054430019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 243054430019 in words is "two hundred forty-three billion, fifty-four million, four hundred thirty thousand, nineteen".