1224540019 has 2 divisors, whose sum is σ = 1224540020. Its totient is φ = 1224540018.

The previous prime is 1224540013. The next prime is 1224540061. The reversal of 1224540019 is 9100454221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1224540019 - 2³ = 1224540011 is a prime.

It is a super-2 number, since 2×1224540019² = 2998996516265040722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1224540011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612270009 + 612270010.

It is an arithmetic number, because the mean of its divisors is an integer number (612270010).

Almost surely, 2^1224540019 is an apocalyptic number.

1224540019 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224540019 is an equidigital number, since it uses as much as digits as its factorization.

1224540019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 1224540019 is about 34993.4282258826. The cubic root of 1224540019 is about 1069.8535389251.

The spelling of 1224540019 in words is "one billion, two hundred twenty-four million, five hundred forty thousand, nineteen".