8629319845 has 4 divisors (see below), whose sum is σ = 10355183820. Its totient is φ = 6903455872.

The previous prime is 8629319821. The next prime is 8629319861. The reversal of 8629319845 is 5489139268.

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 2331151524 + 6298168321 = 48282^2 + 79361^2 .

It is a cyclic number.

It is not a de Polignac number, because 8629319845 - 2²⁹ = 8092448933 is a prime.

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, 862931980 + ... + 862931989.

It is an arithmetic number, because the mean of its divisors is an integer number (2588795955).

Almost surely, 2^8629319845 is an apocalyptic number.

It is an amenable number.

8629319845 is a deficient number, since it is larger than the sum of its proper divisors (1725863975).

8629319845 is a wasteful number, since it uses less digits than its factorization.

8629319845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1725863974.

The product of its digits is 3732480, while the sum is 55.

The square root of 8629319845 is about 92894.1324573302. The cubic root of 8629319845 is about 2051.1252870124.

The spelling of 8629319845 in words is "eight billion, six hundred twenty-nine million, three hundred nineteen thousand, eight hundred forty-five".