238661273 has 2 divisors, whose sum is σ = 238661274. Its totient is φ = 238661272.

The previous prime is 238661257. The next prime is 238661323. The reversal of 238661273 is 372166832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 229583104 + 9078169 = 15152^2 + 3013^2 .

It is a cyclic number.

It is not a de Polignac number, because 238661273 - 2⁴ = 238661257 is a prime.

It is not a weakly prime, because it can be changed into another prime (238661233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119330636 + 119330637.

It is an arithmetic number, because the mean of its divisors is an integer number (119330637).

Almost surely, 2^238661273 is an apocalyptic number.

It is an amenable number.

238661273 is a deficient number, since it is larger than the sum of its proper divisors (1).

238661273 is an equidigital number, since it uses as much as digits as its factorization.

238661273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 38.

The square root of 238661273 is about 15448.6657352666. The cubic root of 238661273 is about 620.2888638338.

The spelling of 238661273 in words is "two hundred thirty-eight million, six hundred sixty-one thousand, two hundred seventy-three".