7922913213 has 4 divisors (see below), whose sum is σ = 10563884288. Its totient is φ = 5281942140.

The previous prime is 7922913191. The next prime is 7922913253. The reversal of 7922913213 is 3123192297.

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 not a de Polignac number, because 7922913213 - 2¹⁷ = 7922782141 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 (7922913253) 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, 1320485533 + ... + 1320485538.

It is an arithmetic number, because the mean of its divisors is an integer number (2640971072).

Almost surely, 2^7922913213 is an apocalyptic number.

It is an amenable number.

7922913213 is a deficient number, since it is larger than the sum of its proper divisors (2640971075).

7922913213 is a wasteful number, since it uses less digits than its factorization.

7922913213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2640971074.

The product of its digits is 40824, while the sum is 39.

The square root of 7922913213 is about 89010.7477386860. The cubic root of 7922913213 is about 1993.5553566752. Note that the first 3 decimals are identical.

The spelling of 7922913213 in words is "seven billion, nine hundred twenty-two million, nine hundred thirteen thousand, two hundred thirteen".