7942857873 has 4 divisors (see below), whose sum is σ = 10590477168. Its totient is φ = 5295238580.

The previous prime is 7942857823. The next prime is 7942857899. The reversal of 7942857873 is 3787582497.

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 7942857873 - 2⁶ = 7942857809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7942857823) 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, 1323809643 + ... + 1323809648.

It is an arithmetic number, because the mean of its divisors is an integer number (2647619292).

Almost surely, 2^7942857873 is an apocalyptic number.

It is an amenable number.

7942857873 is a deficient number, since it is larger than the sum of its proper divisors (2647619295).

7942857873 is a wasteful number, since it uses less digits than its factorization.

7942857873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2647619294.

The product of its digits is 23708160, while the sum is 60.

The square root of 7942857873 is about 89122.7124418910. The cubic root of 7942857873 is about 1995.2267732994.

The spelling of 7942857873 in words is "seven billion, nine hundred forty-two million, eight hundred fifty-seven thousand, eight hundred seventy-three".