38641634905 has 4 divisors (see below), whose sum is σ = 46369961892. Its totient is φ = 30913307920.

The previous prime is 38641634893. The next prime is 38641634929. The reversal of 38641634905 is 50943614683.

It is a happy number.

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 29231082841 + 9410552064 = 170971^2 + 97008^2 .

It is not a de Polignac number, because 38641634905 - 2²¹ = 38639537753 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3864163486 + ... + 3864163495.

It is an arithmetic number, because the mean of its divisors is an integer number (11592490473).

Almost surely, 2^38641634905 is an apocalyptic number.

It is an amenable number.

38641634905 is a deficient number, since it is larger than the sum of its proper divisors (7728326987).

38641634905 is an equidigital number, since it uses as much as digits as its factorization.

38641634905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7728326986.

The product of its (nonzero) digits is 1866240, while the sum is 49.

The spelling of 38641634905 in words is "thirty-eight billion, six hundred forty-one million, six hundred thirty-four thousand, nine hundred five".