238935147643 has 2 divisors, whose sum is σ = 238935147644. Its totient is φ = 238935147642.

The previous prime is 238935147623. The next prime is 238935147697. The reversal of 238935147643 is 346741539832.

It is a happy number.

238935147643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238935147643 is a prime.

It is not a weakly prime, because it can be changed into another prime (238935147623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119467573821 + 119467573822.

It is an arithmetic number, because the mean of its divisors is an integer number (119467573822).

Almost surely, 2^238935147643 is an apocalyptic number.

238935147643 is a deficient number, since it is larger than the sum of its proper divisors (1).

238935147643 is an equidigital number, since it uses as much as digits as its factorization.

238935147643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13063680, while the sum is 55.

The spelling of 238935147643 in words is "two hundred thirty-eight billion, nine hundred thirty-five million, one hundred forty-seven thousand, six hundred forty-three".