2009358173 has 2 divisors, whose sum is σ = 2009358174. Its totient is φ = 2009358172.

The previous prime is 2009358133. The next prime is 2009358179. The reversal of 2009358173 is 3718539002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1955585284 + 53772889 = 44222^2 + 7333^2 .

It is a cyclic number.

It is not a de Polignac number, because 2009358173 - 2¹² = 2009354077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2009358179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1004679086 + 1004679087.

It is an arithmetic number, because the mean of its divisors is an integer number (1004679087).

Almost surely, 2^2009358173 is an apocalyptic number.

It is an amenable number.

2009358173 is a deficient number, since it is larger than the sum of its proper divisors (1).

2009358173 is an equidigital number, since it uses as much as digits as its factorization.

2009358173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 2009358173 is about 44825.8650000198. The cubic root of 2009358173 is about 1261.8830860823.

The spelling of 2009358173 in words is "two billion, nine million, three hundred fifty-eight thousand, one hundred seventy-three".