385948757 has 2 divisors, whose sum is σ = 385948758. Its totient is φ = 385948756.

The previous prime is 385948747. The next prime is 385948789. The reversal of 385948757 is 757849583.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 344139601 + 41809156 = 18551^2 + 6466^2 .

It is an emirp because it is prime and its reverse (757849583) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 385948757 - 2¹² = 385944661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (385948747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192974378 + 192974379.

It is an arithmetic number, because the mean of its divisors is an integer number (192974379).

Almost surely, 2^385948757 is an apocalyptic number.

It is an amenable number.

385948757 is a deficient number, since it is larger than the sum of its proper divisors (1).

385948757 is an equidigital number, since it uses as much as digits as its factorization.

385948757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8467200, while the sum is 56.

The square root of 385948757 is about 19645.5785610910. The cubic root of 385948757 is about 728.0757208251.

The spelling of 385948757 in words is "three hundred eighty-five million, nine hundred forty-eight thousand, seven hundred fifty-seven".