7922137873 has 4 divisors (see below), whose sum is σ = 8531533108. Its totient is φ = 7312742640.

The previous prime is 7922137859. The next prime is 7922137879. The reversal of 7922137873 is 3787312297.

It is a happy number.

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 2632921344 + 5289216529 = 51312^2 + 72727^2 .

It is a cyclic number.

It is not a de Polignac number, because 7922137873 - 2⁵ = 7922137841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7922137879) 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, 304697598 + ... + 304697623.

It is an arithmetic number, because the mean of its divisors is an integer number (2132883277).

Almost surely, 2^7922137873 is an apocalyptic number.

It is an amenable number.

7922137873 is a deficient number, since it is larger than the sum of its proper divisors (609395235).

7922137873 is a wasteful number, since it uses less digits than its factorization.

7922137873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609395234.

The product of its digits is 889056, while the sum is 49.

The square root of 7922137873 is about 89006.3923153837. The cubic root of 7922137873 is about 1993.4903244667.

The spelling of 7922137873 in words is "seven billion, nine hundred twenty-two million, one hundred thirty-seven thousand, eight hundred seventy-three".