239124781853 has 2 divisors, whose sum is σ = 239124781854. Its totient is φ = 239124781852.

The previous prime is 239124781843. The next prime is 239124781879. The reversal of 239124781853 is 358187421932.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 229098164164 + 10026617689 = 478642^2 + 100133^2 .

It is a cyclic number.

It is not a de Polignac number, because 239124781853 - 2⁴ = 239124781837 is a prime.

It is a super-2 number, since 2×239124781853² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 239124781795 and 239124781804.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (239124781823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119562390926 + 119562390927.

It is an arithmetic number, because the mean of its divisors is an integer number (119562390927).

Almost surely, 2^239124781853 is an apocalyptic number.

It is an amenable number.

239124781853 is a deficient number, since it is larger than the sum of its proper divisors (1).

239124781853 is an equidigital number, since it uses as much as digits as its factorization.

239124781853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2903040, while the sum is 53.

The spelling of 239124781853 in words is "two hundred thirty-nine billion, one hundred twenty-four million, seven hundred eighty-one thousand, eight hundred fifty-three".