38921849173 has 2 divisors, whose sum is σ = 38921849174. Its totient is φ = 38921849172.

The previous prime is 38921849077. The next prime is 38921849191. The reversal of 38921849173 is 37194812983.

It is a happy number.

38921849173 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28312437169 + 10609412004 = 168263^2 + 103002^2 .

It is a cyclic number.

It is not a de Polignac number, because 38921849173 - 2⁹ = 38921848661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38921849273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19460924586 + 19460924587.

It is an arithmetic number, because the mean of its divisors is an integer number (19460924587).

Almost surely, 2^38921849173 is an apocalyptic number.

It is an amenable number.

38921849173 is a deficient number, since it is larger than the sum of its proper divisors (1).

38921849173 is an equidigital number, since it uses as much as digits as its factorization.

38921849173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2612736, while the sum is 55.

The spelling of 38921849173 in words is "thirty-eight billion, nine hundred twenty-one million, eight hundred forty-nine thousand, one hundred seventy-three".