8422978193 has 8 divisors (see below), whose sum is σ = 9667577088. Its totient is φ = 7188708384.

The previous prime is 8422978181. The next prime is 8422978211. The reversal of 8422978193 is 3918792248.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8422978193 - 2⁶ = 8422978129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8422978093) 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, 2580521 + ... + 2583782.

It is an arithmetic number, because the mean of its divisors is an integer number (1208447136).

Almost surely, 2^8422978193 is an apocalyptic number.

It is an amenable number.

8422978193 is a deficient number, since it is larger than the sum of its proper divisors (1244598895).

8422978193 is a wasteful number, since it uses less digits than its factorization.

8422978193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5164543.

The product of its digits is 1741824, while the sum is 53.

The square root of 8422978193 is about 91776.7846080914. The cubic root of 8422978193 is about 2034.6445936408.

The spelling of 8422978193 in words is "eight billion, four hundred twenty-two million, nine hundred seventy-eight thousand, one hundred ninety-three".