385017761 has 2 divisors, whose sum is σ = 385017762. Its totient is φ = 385017760.

The previous prime is 385017733. The next prime is 385017791. The reversal of 385017761 is 167710583.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 375158161 + 9859600 = 19369^2 + 3140^2 .

It is an emirp because it is prime and its reverse (167710583) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 385017761 - 2⁶ = 385017697 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (385017791) 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, 192508880 + 192508881.

It is an arithmetic number, because the mean of its divisors is an integer number (192508881).

Almost surely, 2^385017761 is an apocalyptic number.

It is an amenable number.

385017761 is a deficient number, since it is larger than the sum of its proper divisors (1).

385017761 is an equidigital number, since it uses as much as digits as its factorization.

385017761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35280, while the sum is 38.

The square root of 385017761 is about 19621.8694573173. The cubic root of 385017761 is about 727.4898215020.

The spelling of 385017761 in words is "three hundred eighty-five million, seventeen thousand, seven hundred sixty-one".