2729903173 has 4 divisors (see below), whose sum is σ = 2730726540. Its totient is φ = 2729079808.

The previous prime is 2729903161. The next prime is 2729903177. The reversal of 2729903173 is 3713099272.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 697065604 + 2032837569 = 26402^2 + 45087^2 .

It is a cyclic number.

It is not a de Polignac number, because 2729903173 - 2²¹ = 2727806021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2729903177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 406690 + ... + 413347.

It is an arithmetic number, because the mean of its divisors is an integer number (682681635).

Almost surely, 2^2729903173 is an apocalyptic number.

It is an amenable number.

2729903173 is a deficient number, since it is larger than the sum of its proper divisors (823367).

2729903173 is an equidigital number, since it uses as much as digits as its factorization.

2729903173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823366.

The product of its (nonzero) digits is 142884, while the sum is 43.

The square root of 2729903173 is about 52248.4753174674. The cubic root of 2729903173 is about 1397.5984632414.

The spelling of 2729903173 in words is "two billion, seven hundred twenty-nine million, nine hundred three thousand, one hundred seventy-three".