38136640441 has 4 divisors (see below), whose sum is σ = 38144601972. Its totient is φ = 38128678912.

The previous prime is 38136640433. The next prime is 38136640453. The reversal of 38136640441 is 14404663183.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32254364025 + 5882276416 = 179595^2 + 76696^2 .

It is a cyclic number.

It is not a de Polignac number, because 38136640441 - 2³ = 38136640433 is a prime.

It is a super-2 number, since 2×38136640441² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38136640394 and 38136640403.

It is not an unprimeable number, because it can be changed into a prime (38136640471) 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, 3973576 + ... + 3983161.

It is an arithmetic number, because the mean of its divisors is an integer number (9536150493).

Almost surely, 2^38136640441 is an apocalyptic number.

It is an amenable number.

38136640441 is a deficient number, since it is larger than the sum of its proper divisors (7961531).

38136640441 is an equidigital number, since it uses as much as digits as its factorization.

38136640441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7961530.

The product of its (nonzero) digits is 165888, while the sum is 40.

The spelling of 38136640441 in words is "thirty-eight billion, one hundred thirty-six million, six hundred forty thousand, four hundred forty-one".