7972218294 has 16 divisors (see below), whose sum is σ = 15963820032. Its totient is φ = 2654175528.

The previous prime is 7972218281. The next prime is 7972218299. The reversal of 7972218294 is 4928122797.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7972218299) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 802294 + ... + 812169.

It is an arithmetic number, because the mean of its divisors is an integer number (997738752).

Almost surely, 2^7972218294 is an apocalyptic number.

7972218294 is an abundant number, since it is smaller than the sum of its proper divisors (7991601738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7972218294 is a wasteful number, since it uses less digits than its factorization.

7972218294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1615291.

The product of its digits is 1016064, while the sum is 51.

The square root of 7972218294 is about 89287.2795755364. The cubic root of 7972218294 is about 1997.6821727093.

The spelling of 7972218294 in words is "seven billion, nine hundred seventy-two million, two hundred eighteen thousand, two hundred ninety-four".