238154197 has 2 divisors, whose sum is σ = 238154198. Its totient is φ = 238154196.

The previous prime is 238154171. The next prime is 238154219. The reversal of 238154197 is 791451832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 237961476 + 192721 = 15426^2 + 439^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238154197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238154107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119077098 + 119077099.

It is an arithmetic number, because the mean of its divisors is an integer number (119077099).

Almost surely, 2^238154197 is an apocalyptic number.

It is an amenable number.

238154197 is a deficient number, since it is larger than the sum of its proper divisors (1).

238154197 is an equidigital number, since it uses as much as digits as its factorization.

238154197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 40.

The square root of 238154197 is about 15432.2453648197. The cubic root of 238154197 is about 619.8492496824.

The spelling of 238154197 in words is "two hundred thirty-eight million, one hundred fifty-four thousand, one hundred ninety-seven".