264340019 has 2 divisors, whose sum is σ = 264340020. Its totient is φ = 264340018.

The previous prime is 264340009. The next prime is 264340031. The reversal of 264340019 is 910043462.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 264340019 - 2²⁴ = 247562803 is a prime.

It is a super-2 number, since 2×264340019² = 139751291289840722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 264339973 and 264340000.

It is not a weakly prime, because it can be changed into another prime (264340009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132170009 + 132170010.

It is an arithmetic number, because the mean of its divisors is an integer number (132170010).

Almost surely, 2^264340019 is an apocalyptic number.

264340019 is a deficient number, since it is larger than the sum of its proper divisors (1).

264340019 is an equidigital number, since it uses as much as digits as its factorization.

264340019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 264340019 is about 16258.5368037840. The cubic root of 264340019 is about 641.7821575970.

The spelling of 264340019 in words is "two hundred sixty-four million, three hundred forty thousand, nineteen".