8995173973 has 2 divisors, whose sum is σ = 8995173974. Its totient is φ = 8995173972.

The previous prime is 8995173949. The next prime is 8995173991. The reversal of 8995173973 is 3793715998.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8876843089 + 118330884 = 94217^2 + 10878^2 .

It is a cyclic number.

It is not a de Polignac number, because 8995173973 - 2⁹ = 8995173461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8995113973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4497586986 + 4497586987.

It is an arithmetic number, because the mean of its divisors is an integer number (4497586987).

Almost surely, 2^8995173973 is an apocalyptic number.

It is an amenable number.

8995173973 is a deficient number, since it is larger than the sum of its proper divisors (1).

8995173973 is an equidigital number, since it uses as much as digits as its factorization.

8995173973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12859560, while the sum is 61.

The square root of 8995173973 is about 94842.8909987459. The cubic root of 8995173973 is about 2079.7119587729.

The spelling of 8995173973 in words is "eight billion, nine hundred ninety-five million, one hundred seventy-three thousand, nine hundred seventy-three".