248782819 has 2 divisors, whose sum is σ = 248782820. Its totient is φ = 248782818.

The previous prime is 248782757. The next prime is 248782861. The reversal of 248782819 is 918287842.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 248782819 - 2⁹ = 248782307 is a prime.

It is a super-2 number, since 2×248782819² = 123785782059173522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (248782889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124391409 + 124391410.

It is an arithmetic number, because the mean of its divisors is an integer number (124391410).

Almost surely, 2^248782819 is an apocalyptic number.

248782819 is a deficient number, since it is larger than the sum of its proper divisors (1).

248782819 is an equidigital number, since it uses as much as digits as its factorization.

248782819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 516096, while the sum is 49.

The square root of 248782819 is about 15772.8506935176. The cubic root of 248782819 is about 628.9364932601.

The spelling of 248782819 in words is "two hundred forty-eight million, seven hundred eighty-two thousand, eight hundred nineteen".