1385885771 has 2 divisors, whose sum is σ = 1385885772. Its totient is φ = 1385885770.

The previous prime is 1385885759. The next prime is 1385885807. The reversal of 1385885771 is 1775885831.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1385885771 is a prime.

It is not a weakly prime, because it can be changed into another prime (1385885471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 692942885 + 692942886.

It is an arithmetic number, because the mean of its divisors is an integer number (692942886).

Almost surely, 2^1385885771 is an apocalyptic number.

1385885771 is a deficient number, since it is larger than the sum of its proper divisors (1).

1385885771 is an equidigital number, since it uses as much as digits as its factorization.

1385885771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1881600, while the sum is 53.

The square root of 1385885771 is about 37227.4867671725. The cubic root of 1385885771 is about 1114.9168487530.

The spelling of 1385885771 in words is "one billion, three hundred eighty-five million, eight hundred eighty-five thousand, seven hundred seventy-one".