2173857263 has 4 divisors (see below), whose sum is σ = 2232610200. Its totient is φ = 2115104328.

The previous prime is 2173857253. The next prime is 2173857311. The reversal of 2173857263 is 3627583712.

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

It is a cyclic number.

It is not a de Polignac number, because 2173857263 - 2⁶ = 2173857199 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 (2173857253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29376413 + ... + 29376486.

It is an arithmetic number, because the mean of its divisors is an integer number (558152550).

Almost surely, 2^2173857263 is an apocalyptic number.

2173857263 is a deficient number, since it is larger than the sum of its proper divisors (58752937).

2173857263 is an equidigital number, since it uses as much as digits as its factorization.

2173857263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58752936.

The product of its digits is 423360, while the sum is 44.

The square root of 2173857263 is about 46624.6422291903. The cubic root of 2173857263 is about 1295.4192354725.

The spelling of 2173857263 in words is "two billion, one hundred seventy-three million, eight hundred fifty-seven thousand, two hundred sixty-three".