7146390816 has 72 divisors (see below), whose sum is σ = 20978141184. Its totient is φ = 2305284480.

The previous prime is 7146390799. The next prime is 7146390817. The reversal of 7146390816 is 6180936417.

It is a happy number.

7146390816 is a `hidden beast` number, since 7 + 1 + 4 + 639 + 0 + 8 + 1 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (7146390817) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 391296 + ... + 409151.

It is an arithmetic number, because the mean of its divisors is an integer number (291363072).

Almost surely, 2^7146390816 is an apocalyptic number.

It is an amenable number.

7146390816 is an abundant number, since it is smaller than the sum of its proper divisors (13831750368).

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

7146390816 is a wasteful number, since it uses less digits than its factorization.

7146390816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800494 (or 800483 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 7146390816 is about 84536.3283801704. The cubic root of 7146390816 is about 1926.1743161230.

The spelling of 7146390816 in words is "seven billion, one hundred forty-six million, three hundred ninety thousand, eight hundred sixteen".