238642177 has 2 divisors, whose sum is σ = 238642178. Its totient is φ = 238642176.

The previous prime is 238642139. The next prime is 238642211. The reversal of 238642177 is 771246832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197374401 + 41267776 = 14049^2 + 6424^2 .

It is a cyclic number.

It is not a de Polignac number, because 238642177 - 2²⁷ = 104424449 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (238642127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119321088 + 119321089.

It is an arithmetic number, because the mean of its divisors is an integer number (119321089).

Almost surely, 2^238642177 is an apocalyptic number.

It is an amenable number.

238642177 is a deficient number, since it is larger than the sum of its proper divisors (1).

238642177 is an equidigital number, since it uses as much as digits as its factorization.

238642177 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 112896, while the sum is 40.

The square root of 238642177 is about 15448.0476760010. The cubic root of 238642177 is about 620.2723196721.

The spelling of 238642177 in words is "two hundred thirty-eight million, six hundred forty-two thousand, one hundred seventy-seven".