8219081546 has 8 divisors (see below), whose sum is σ = 13276977924. Its totient is φ = 3793422240.

The previous prime is 8219081531. The next prime is 8219081551. The reversal of 8219081546 is 6451809128.

It can be written as a sum of positive squares in 2 ways, for example, as 6865945321 + 1353136225 = 82861^2 + 36785^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 8219081497 and 8219081506.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158059235 + ... + 158059286.

Almost surely, 2^8219081546 is an apocalyptic number.

8219081546 is a deficient number, since it is larger than the sum of its proper divisors (5057896378).

8219081546 is a wasteful number, since it uses less digits than its factorization.

8219081546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316118536.

The product of its (nonzero) digits is 138240, while the sum is 44.

The square root of 8219081546 is about 90659.1503710464. The cubic root of 8219081546 is about 2018.0926303223.

The spelling of 8219081546 in words is "eight billion, two hundred nineteen million, eighty-one thousand, five hundred forty-six".