8445586378 has 4 divisors (see below), whose sum is σ = 12668379570. Its totient is φ = 4222793188.

The previous prime is 8445586363. The next prime is 8445586421. The reversal of 8445586378 is 8736855448.

It is a happy number.

8445586378 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 8438810769 + 6775609 = 91863^2 + 2603^2 .

It is a super-3 number, since 3×8445586378³ (a number of 31 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2111396593 + ... + 2111396596.

Almost surely, 2^8445586378 is an apocalyptic number.

8445586378 is a deficient number, since it is larger than the sum of its proper divisors (4222793192).

8445586378 is a wasteful number, since it uses less digits than its factorization.

8445586378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4222793191.

The product of its digits is 25804800, while the sum is 58.

The square root of 8445586378 is about 91899.8714797796. The cubic root of 8445586378 is about 2036.4633694389.

The spelling of 8445586378 in words is "eight billion, four hundred forty-five million, five hundred eighty-six thousand, three hundred seventy-eight".