10385837691 has 4 divisors (see below), whose sum is σ = 13847783592. Its totient is φ = 6923891792.

The previous prime is 10385837689. The next prime is 10385837699. The reversal of 10385837691 is 19673858301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19673858301 = 3 ⋅6557952767.

It is a cyclic number.

It is not a de Polignac number, because 10385837691 - 2¹ = 10385837689 is a prime.

It is a super-2 number, since 2×10385837691² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10385837699) 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 3 ways as a sum of consecutive naturals, for example, 1730972946 + ... + 1730972951.

It is an arithmetic number, because the mean of its divisors is an integer number (3461945898).

Almost surely, 2^10385837691 is an apocalyptic number.

10385837691 is a deficient number, since it is larger than the sum of its proper divisors (3461945901).

10385837691 is an equidigital number, since it uses as much as digits as its factorization.

10385837691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3461945900.

The product of its (nonzero) digits is 1088640, while the sum is 51.

The spelling of 10385837691 in words is "ten billion, three hundred eighty-five million, eight hundred thirty-seven thousand, six hundred ninety-one".