2173751493 has 4 divisors (see below), whose sum is σ = 2898335328. Its totient is φ = 1449167660.

The previous prime is 2173751479. The next prime is 2173751519. The reversal of 2173751493 is 3941573712.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2173751493 - 2⁶ = 2173751429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2173751423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 362291913 + ... + 362291918.

It is an arithmetic number, because the mean of its divisors is an integer number (724583832).

Almost surely, 2^2173751493 is an apocalyptic number.

It is an amenable number.

2173751493 is a deficient number, since it is larger than the sum of its proper divisors (724583835).

2173751493 is an equidigital number, since it uses as much as digits as its factorization.

2173751493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724583834.

The product of its digits is 158760, while the sum is 42.

The square root of 2173751493 is about 46623.5079439546. The cubic root of 2173751493 is about 1295.3982253972.

The spelling of 2173751493 in words is "two billion, one hundred seventy-three million, seven hundred fifty-one thousand, four hundred ninety-three".