8638198545 has 8 divisors (see below), whose sum is σ = 13821117696. Its totient is φ = 4607039216.

The previous prime is 8638198511. The next prime is 8638198603. The reversal of 8638198545 is 5458918368.

8638198545 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 8638198545 - 2¹⁰ = 8638197521 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 287939937 + ... + 287939966.

It is an arithmetic number, because the mean of its divisors is an integer number (1727639712).

Almost surely, 2^8638198545 is an apocalyptic number.

It is an amenable number.

8638198545 is a deficient number, since it is larger than the sum of its proper divisors (5182919151).

8638198545 is a wasteful number, since it uses less digits than its factorization.

8638198545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575879911.

The product of its digits is 8294400, while the sum is 57.

The square root of 8638198545 is about 92941.9095187957. The cubic root of 8638198545 is about 2051.8285129178.

The spelling of 8638198545 in words is "eight billion, six hundred thirty-eight million, one hundred ninety-eight thousand, five hundred forty-five".