238648547 has 2 divisors, whose sum is σ = 238648548. Its totient is φ = 238648546.

The previous prime is 238648517. The next prime is 238648591. The reversal of 238648547 is 745846832.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238648547 is a prime.

It is a super-2 number, since 2×238648547² = 113906257970422418, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (238648507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119324273 + 119324274.

It is an arithmetic number, because the mean of its divisors is an integer number (119324274).

Almost surely, 2^238648547 is an apocalyptic number.

238648547 is a deficient number, since it is larger than the sum of its proper divisors (1).

238648547 is an equidigital number, since it uses as much as digits as its factorization.

238648547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1290240, while the sum is 47.

The square root of 238648547 is about 15448.2538495456. The cubic root of 238648547 is about 620.2778385339.

The spelling of 238648547 in words is "two hundred thirty-eight million, six hundred forty-eight thousand, five hundred forty-seven".