2140161173 has 4 divisors (see below), whose sum is σ = 2192360268. Its totient is φ = 2087962080.

The previous prime is 2140161143. The next prime is 2140161187. The reversal of 2140161173 is 3711610412.

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 1140210289 + 999950884 = 33767^2 + 31622^2 .

It is a cyclic number.

It is not a de Polignac number, because 2140161173 - 2¹⁴ = 2140144789 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 (2140161143) 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, 26099486 + ... + 26099567.

It is an arithmetic number, because the mean of its divisors is an integer number (548090067).

Almost surely, 2^2140161173 is an apocalyptic number.

It is an amenable number.

2140161173 is a deficient number, since it is larger than the sum of its proper divisors (52199095).

2140161173 is an equidigital number, since it uses as much as digits as its factorization.

2140161173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52199094.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 2140161173 is about 46261.8760211905. The cubic root of 2140161173 is about 1288.6910932869.

Adding to 2140161173 its reverse (3711610412), we get a palindrome (5851771585).

The spelling of 2140161173 in words is "two billion, one hundred forty million, one hundred sixty-one thousand, one hundred seventy-three".