7148739173 has 4 divisors (see below), whose sum is σ = 7569253260. Its totient is φ = 6728225088.

The previous prime is 7148739149. The next prime is 7148739187. The reversal of 7148739173 is 3719378417.

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 6153147364 + 995591809 = 78442^2 + 31553^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7148739173 is a prime.

It is a super-2 number, since 2×7148739173² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7148739473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210257018 + ... + 210257051.

It is an arithmetic number, because the mean of its divisors is an integer number (1892313315).

Almost surely, 2^7148739173 is an apocalyptic number.

It is an amenable number.

7148739173 is a deficient number, since it is larger than the sum of its proper divisors (420514087).

7148739173 is a wasteful number, since it uses less digits than its factorization.

7148739173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420514086.

The product of its digits is 889056, while the sum is 50.

The square root of 7148739173 is about 84550.2168713954. The cubic root of 7148739173 is about 1926.3852780699.

The spelling of 7148739173 in words is "seven billion, one hundred forty-eight million, seven hundred thirty-nine thousand, one hundred seventy-three".