384748561 has 2 divisors, whose sum is σ = 384748562. Its totient is φ = 384748560.

The previous prime is 384748541. The next prime is 384748579. The reversal of 384748561 is 165847483.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 241491600 + 143256961 = 15540^2 + 11969^2 .

It is a cyclic number.

It is not a de Polignac number, because 384748561 - 2¹⁷ = 384617489 is a prime.

It is not a weakly prime, because it can be changed into another prime (384748501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192374280 + 192374281.

It is an arithmetic number, because the mean of its divisors is an integer number (192374281).

Almost surely, 2^384748561 is an apocalyptic number.

It is an amenable number.

384748561 is a deficient number, since it is larger than the sum of its proper divisors (1).

384748561 is an equidigital number, since it uses as much as digits as its factorization.

384748561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 645120, while the sum is 46.

The square root of 384748561 is about 19615.0085648720. The cubic root of 384748561 is about 727.3202311258.

The spelling of 384748561 in words is "three hundred eighty-four million, seven hundred forty-eight thousand, five hundred sixty-one".