10638427369 has 4 divisors (see below), whose sum is σ = 10666948996. Its totient is φ = 10609905744.

The previous prime is 10638427321. The next prime is 10638427391. The reversal of 10638427369 is 96372483601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96372483601 = 19 ⋅5072235979.

It can be written as a sum of positive squares in 2 ways, for example, as 7380871744 + 3257555625 = 85912^2 + 57075^2 .

It is a cyclic number.

It is not a de Polignac number, because 10638427369 - 2¹¹ = 10638425321 is a prime.

It is a super-2 number, since 2×10638427369² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10638427069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14260254 + ... + 14260999.

It is an arithmetic number, because the mean of its divisors is an integer number (2666737249).

Almost surely, 2^10638427369 is an apocalyptic number.

It is an amenable number.

10638427369 is a deficient number, since it is larger than the sum of its proper divisors (28521627).

10638427369 is an equidigital number, since it uses as much as digits as its factorization.

10638427369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28521626.

The product of its (nonzero) digits is 1306368, while the sum is 49.

The spelling of 10638427369 in words is "ten billion, six hundred thirty-eight million, four hundred twenty-seven thousand, three hundred sixty-nine".