8182999645 has 4 divisors (see below), whose sum is σ = 9819599580. Its totient is φ = 6546399712.

The previous prime is 8182999613. The next prime is 8182999651. The reversal of 8182999645 is 5469992818.

8182999645 is digitally balanced in base 3, 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 2 ways, for example, as 5264082916 + 2918916729 = 72554^2 + 54027^2 .

It is a cyclic number.

It is not a de Polignac number, because 8182999645 - 2⁵ = 8182999613 is a prime.

It is a super-2 number, since 2×8182999645² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 818299960 + ... + 818299969.

It is an arithmetic number, because the mean of its divisors is an integer number (2454899895).

Almost surely, 2^8182999645 is an apocalyptic number.

It is an amenable number.

8182999645 is a deficient number, since it is larger than the sum of its proper divisors (1636599935).

8182999645 is a wasteful number, since it uses less digits than its factorization.

8182999645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1636599934.

The product of its digits is 11197440, while the sum is 61.

The square root of 8182999645 is about 90459.9339210460. The cubic root of 8182999645 is about 2015.1351451862.

The spelling of 8182999645 in words is "eight billion, one hundred eighty-two million, nine hundred ninety-nine thousand, six hundred forty-five".