238613657 has 2 divisors, whose sum is σ = 238613658. Its totient is φ = 238613656.

The previous prime is 238613593. The next prime is 238613663. The reversal of 238613657 is 756316832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 226924096 + 11689561 = 15064^2 + 3419^2 .

It is a cyclic number.

It is not a de Polignac number, because 238613657 - 2⁶ = 238613593 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (238613677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119306828 + 119306829.

It is an arithmetic number, because the mean of its divisors is an integer number (119306829).

Almost surely, 2^238613657 is an apocalyptic number.

It is an amenable number.

238613657 is a deficient number, since it is larger than the sum of its proper divisors (1).

238613657 is an equidigital number, since it uses as much as digits as its factorization.

238613657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 41.

The square root of 238613657 is about 15447.1245544276. The cubic root of 238613657 is about 620.2476092158.

The spelling of 238613657 in words is "two hundred thirty-eight million, six hundred thirteen thousand, six hundred fifty-seven".