238727641 has 2 divisors, whose sum is σ = 238727642. Its totient is φ = 238727640.

The previous prime is 238727639. The next prime is 238727659. The reversal of 238727641 is 146727832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 215649225 + 23078416 = 14685^2 + 4804^2 .

It is a cyclic number.

It is not a de Polignac number, because 238727641 - 2¹ = 238727639 is a prime.

It is a super-3 number, since 3×238727641³ (a number of 26 digits) contains 333 as substring.

Together with 238727639, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 238727594 and 238727603.

It is not a weakly prime, because it can be changed into another prime (238721641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119363820 + 119363821.

It is an arithmetic number, because the mean of its divisors is an integer number (119363821).

Almost surely, 2^238727641 is an apocalyptic number.

It is an amenable number.

238727641 is a deficient number, since it is larger than the sum of its proper divisors (1).

238727641 is an equidigital number, since it uses as much as digits as its factorization.

238727641 is an evil number, because the sum of its binary digits is even.

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

The square root of 238727641 is about 15450.8136031731. The cubic root of 238727641 is about 620.3463560771.

It can be divided in two parts, 23872 and 7641, that added together give a palindrome (31513).

The spelling of 238727641 in words is "two hundred thirty-eight million, seven hundred twenty-seven thousand, six hundred forty-one".