238138097 has 2 divisors, whose sum is σ = 238138098. Its totient is φ = 238138096.

The previous prime is 238138093. The next prime is 238138099. The reversal of 238138097 is 790831832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126540001 + 111598096 = 11249^2 + 10564^2 .

It is a cyclic number.

It is not a de Polignac number, because 238138097 - 2² = 238138093 is a prime.

Together with 238138099, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (238138093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119069048 + 119069049.

It is an arithmetic number, because the mean of its divisors is an integer number (119069049).

Almost surely, 2^238138097 is an apocalyptic number.

It is an amenable number.

238138097 is a deficient number, since it is larger than the sum of its proper divisors (1).

238138097 is an equidigital number, since it uses as much as digits as its factorization.

238138097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 238138097 is about 15431.7237209587. The cubic root of 238138097 is about 619.8352814243.

The spelling of 238138097 in words is "two hundred thirty-eight million, one hundred thirty-eight thousand, ninety-seven".