38818861081 has 32 divisors (see below), whose sum is σ = 52470432000. Its totient is φ = 27734158080.

The previous prime is 38818861063. The next prime is 38818861097. The reversal of 38818861081 is 18016881883.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 38818861081 - 2²⁷ = 38684643353 is a prime.

It is a super-2 number, since 2×38818861081² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (38818861061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19015 + ... + 279283.

It is an arithmetic number, because the mean of its divisors is an integer number (1639701000).

Almost surely, 2^38818861081 is an apocalyptic number.

It is an amenable number.

38818861081 is a deficient number, since it is larger than the sum of its proper divisors (13651570919).

38818861081 is a wasteful number, since it uses less digits than its factorization.

38818861081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260449.

The product of its (nonzero) digits is 589824, while the sum is 52.

The spelling of 38818861081 in words is "thirty-eight billion, eight hundred eighteen million, eight hundred sixty-one thousand, eighty-one".