238636613 has 2 divisors, whose sum is σ = 238636614. Its totient is φ = 238636612.

The previous prime is 238636603. The next prime is 238636631. The reversal of 238636613 is 316636832.

238636613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (238636631) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 236452129 + 2184484 = 15377^2 + 1478^2 .

It is a cyclic number.

It is not a de Polignac number, because 238636613 - 2⁴ = 238636597 is a prime.

It is a super-2 number, since 2×238636613² = 113894866128223538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238636603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119318306 + 119318307.

It is an arithmetic number, because the mean of its divisors is an integer number (119318307).

Almost surely, 2^238636613 is an apocalyptic number.

It is an amenable number.

238636613 is a deficient number, since it is larger than the sum of its proper divisors (1).

238636613 is an equidigital number, since it uses as much as digits as its factorization.

238636613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 38.

The square root of 238636613 is about 15447.8675874698. The cubic root of 238636613 is about 620.2674990350.

The spelling of 238636613 in words is "two hundred thirty-eight million, six hundred thirty-six thousand, six hundred thirteen".