38873388817 has 2 divisors, whose sum is σ = 38873388818. Its totient is φ = 38873388816.

The previous prime is 38873388781. The next prime is 38873388821. The reversal of 38873388817 is 71888337883.

It is a happy number.

Together with previous prime (38873388781) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33103619136 + 5769769681 = 181944^2 + 75959^2 .

It is a cyclic number.

It is not a de Polignac number, because 38873388817 - 2⁷ = 38873388689 is a prime.

It is a super-2 number, since 2×38873388817² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38873388887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19436694408 + 19436694409.

It is an arithmetic number, because the mean of its divisors is an integer number (19436694409).

Almost surely, 2^38873388817 is an apocalyptic number.

It is an amenable number.

38873388817 is a deficient number, since it is larger than the sum of its proper divisors (1).

38873388817 is an equidigital number, since it uses as much as digits as its factorization.

38873388817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43352064, while the sum is 64.

The spelling of 38873388817 in words is "thirty-eight billion, eight hundred seventy-three million, three hundred eighty-eight thousand, eight hundred seventeen".