238854088558609 has 2 divisors, whose sum is σ = 238854088558610. Its totient is φ = 238854088558608.

The previous prime is 238854088558513. The next prime is 238854088558639. The reversal of 238854088558609 is 906855880458832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 237767240608209 + 1086847950400 = 15419703^2 + 1042520^2 .

It is a cyclic number.

It is not a de Polignac number, because 238854088558609 - 2⁹ = 238854088558097 is a prime.

It is not a weakly prime, because it can be changed into another prime (238854088558639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119427044279304 + 119427044279305.

It is an arithmetic number, because the mean of its divisors is an integer number (119427044279305).

Almost surely, 2^{238854088558609} is an apocalyptic number.

It is an amenable number.

238854088558609 is a deficient number, since it is larger than the sum of its proper divisors (1).

238854088558609 is an equidigital number, since it uses as much as digits as its factorization.

238854088558609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5308416000, while the sum is 79.

The spelling of 238854088558609 in words is "two hundred thirty-eight trillion, eight hundred fifty-four billion, eighty-eight million, five hundred fifty-eight thousand, six hundred nine".