38381061805 has 8 divisors (see below), whose sum is σ = 46214467992. Its totient is φ = 30600053568.

The previous prime is 38381061751. The next prime is 38381061809. The reversal of 38381061805 is 50816018383.

It can be written as a sum of positive squares in 4 ways, for example, as 2736754596 + 35644307209 = 52314^2 + 188797^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38381061805 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38381061809) 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 7 ways as a sum of consecutive naturals, for example, 13097874 + ... + 13100803.

It is an arithmetic number, because the mean of its divisors is an integer number (5776808499).

Almost surely, 2^38381061805 is an apocalyptic number.

It is an amenable number.

38381061805 is a deficient number, since it is larger than the sum of its proper divisors (7833406187).

38381061805 is a wasteful number, since it uses less digits than its factorization.

38381061805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26198975.

The product of its (nonzero) digits is 138240, while the sum is 43.

The spelling of 38381061805 in words is "thirty-eight billion, three hundred eighty-one million, sixty-one thousand, eight hundred five".