1027938685 has 4 divisors (see below), whose sum is σ = 1233526428. Its totient is φ = 822350944.

The previous prime is 1027938629. The next prime is 1027938707. The reversal of 1027938685 is 5868397201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5868397201 = 167 ⋅35140103.

It can be written as a sum of positive squares in 2 ways, for example, as 567106596 + 460832089 = 23814^2 + 21467^2 .

It is a cyclic number.

It is not a de Polignac number, because 1027938685 - 2²⁵ = 994384253 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 102793864 + ... + 102793873.

It is an arithmetic number, because the mean of its divisors is an integer number (308381607).

Almost surely, 2^1027938685 is an apocalyptic number.

It is an amenable number.

1027938685 is a deficient number, since it is larger than the sum of its proper divisors (205587743).

1027938685 is an equidigital number, since it uses as much as digits as its factorization.

1027938685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205587742.

The product of its (nonzero) digits is 725760, while the sum is 49.

The square root of 1027938685 is about 32061.4828883506. The cubic root of 1027938685 is about 1009.2274865950.

The spelling of 1027938685 in words is "one billion, twenty-seven million, nine hundred thirty-eight thousand, six hundred eighty-five".