8222742145 has 4 divisors (see below), whose sum is σ = 9867290580. Its totient is φ = 6578193712.

The previous prime is 8222742137. The next prime is 8222742163. The reversal of 8222742145 is 5412472228.

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 4811364496 + 3411377649 = 69364^2 + 58407^2 .

It is a cyclic number.

It is not a de Polignac number, because 8222742145 - 2³ = 8222742137 is a prime.

It is a super-2 number, since 2×8222742145² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 822274210 + ... + 822274219.

It is an arithmetic number, because the mean of its divisors is an integer number (2466822645).

Almost surely, 2^8222742145 is an apocalyptic number.

It is an amenable number.

8222742145 is a deficient number, since it is larger than the sum of its proper divisors (1644548435).

8222742145 is a wasteful number, since it uses less digits than its factorization.

8222742145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1644548434.

The product of its digits is 71680, while the sum is 37.

The square root of 8222742145 is about 90679.3369241306. The cubic root of 8222742145 is about 2018.3921906142.

The spelling of 8222742145 in words is "eight billion, two hundred twenty-two million, seven hundred forty-two thousand, one hundred forty-five".