238561369 has 2 divisors, whose sum is σ = 238561370. Its totient is φ = 238561368.

The previous prime is 238561363. The next prime is 238561381. The reversal of 238561369 is 963165832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 185096025 + 53465344 = 13605^2 + 7312^2 .

It is a cyclic number.

It is not a de Polignac number, because 238561369 - 2⁷ = 238561241 is a prime.

It is a super-2 number, since 2×238561369² = 113823053558308322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (238561363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119280684 + 119280685.

It is an arithmetic number, because the mean of its divisors is an integer number (119280685).

Almost surely, 2^238561369 is an apocalyptic number.

It is an amenable number.

238561369 is a deficient number, since it is larger than the sum of its proper divisors (1).

238561369 is an equidigital number, since it uses as much as digits as its factorization.

238561369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 233280, while the sum is 43.

The square root of 238561369 is about 15445.4319784200. The cubic root of 238561369 is about 620.2023004425.

The spelling of 238561369 in words is "two hundred thirty-eight million, five hundred sixty-one thousand, three hundred sixty-nine".