238241992789 has 2 divisors, whose sum is σ = 238241992790. Its totient is φ = 238241992788.

The previous prime is 238241992777. The next prime is 238241992817. The reversal of 238241992789 is 987299142832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 226235312164 + 12006680625 = 475642^2 + 109575^2 .

It is a cyclic number.

It is not a de Polignac number, because 238241992789 - 2⁵ = 238241992757 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 238241992789.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238241992589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119120996394 + 119120996395.

It is an arithmetic number, because the mean of its divisors is an integer number (119120996395).

Almost surely, 2^238241992789 is an apocalyptic number.

It is an amenable number.

238241992789 is a deficient number, since it is larger than the sum of its proper divisors (1).

238241992789 is an equidigital number, since it uses as much as digits as its factorization.

238241992789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31352832, while the sum is 64.

The spelling of 238241992789 in words is "two hundred thirty-eight billion, two hundred forty-one million, nine hundred ninety-two thousand, seven hundred eighty-nine".