38195444173 has 2 divisors, whose sum is σ = 38195444174. Its totient is φ = 38195444172.

The previous prime is 38195444129. The next prime is 38195444179. The reversal of 38195444173 is 37144459183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19110850564 + 19084593609 = 138242^2 + 138147^2 .

It is a cyclic number.

It is not a de Polignac number, because 38195444173 - 2⁹ = 38195443661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38195444179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19097722086 + 19097722087.

It is an arithmetic number, because the mean of its divisors is an integer number (19097722087).

Almost surely, 2^38195444173 is an apocalyptic number.

It is an amenable number.

38195444173 is a deficient number, since it is larger than the sum of its proper divisors (1).

38195444173 is an equidigital number, since it uses as much as digits as its factorization.

38195444173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1451520, while the sum is 49.

The spelling of 38195444173 in words is "thirty-eight billion, one hundred ninety-five million, four hundred forty-four thousand, one hundred seventy-three".