2045417173 has 2 divisors, whose sum is σ = 2045417174. Its totient is φ = 2045417172.

The previous prime is 2045417167. The next prime is 2045417189. The reversal of 2045417173 is 3717145402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1118701809 + 926715364 = 33447^2 + 30442^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2045417173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2045417113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1022708586 + 1022708587.

It is an arithmetic number, because the mean of its divisors is an integer number (1022708587).

Almost surely, 2^2045417173 is an apocalyptic number.

It is an amenable number.

2045417173 is a deficient number, since it is larger than the sum of its proper divisors (1).

2045417173 is an equidigital number, since it uses as much as digits as its factorization.

2045417173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 2045417173 is about 45226.2885167465. The cubic root of 2045417173 is about 1269.3867651339.

The spelling of 2045417173 in words is "two billion, forty-five million, four hundred seventeen thousand, one hundred seventy-three".