38869655981 has 8 divisors (see below), whose sum is σ = 42042425880. Its totient is φ = 35722999872.

The previous prime is 38869655911. The next prime is 38869655983. The reversal of 38869655981 is 18955696883.

It can be written as a sum of positive squares in 4 ways, for example, as 13821529225 + 25048126756 = 117565^2 + 158266^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 38869655981 - 2²⁶ = 38802547117 is a prime.

It is a super-2 number, since 2×38869655981² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38869655983) 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, 6525350 + ... + 6531303.

It is an arithmetic number, because the mean of its divisors is an integer number (5255303235).

Almost surely, 2^38869655981 is an apocalyptic number.

It is an amenable number.

38869655981 is a deficient number, since it is larger than the sum of its proper divisors (3172769899).

38869655981 is a wasteful number, since it uses less digits than its factorization.

38869655981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13056895.

The product of its digits is 111974400, while the sum is 68.

The spelling of 38869655981 in words is "thirty-eight billion, eight hundred sixty-nine million, six hundred fifty-five thousand, nine hundred eighty-one".