385752861 has 40 divisors (see below), whose sum is σ = 637411544. Its totient is φ = 230947200.

The previous prime is 385752833. The next prime is 385752881. The reversal of 385752861 is 168257583.

It can be written as a sum of positive squares in 4 ways, for example, as 166564836 + 219188025 = 12906^2 + 14805^2 .

It is not a de Polignac number, because 385752861 - 2¹⁹ = 385228573 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385752881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 34011 + ... + 43911.

Almost surely, 2^385752861 is an apocalyptic number.

It is an amenable number.

385752861 is a deficient number, since it is larger than the sum of its proper divisors (251658683).

385752861 is a wasteful number, since it uses less digits than its factorization.

385752861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9963 (or 9954 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The square root of 385752861 is about 19640.5921753902. The cubic root of 385752861 is about 727.9525168533.

The spelling of 385752861 in words is "three hundred eighty-five million, seven hundred fifty-two thousand, eight hundred sixty-one".