8643149206 has 4 divisors (see below), whose sum is σ = 12964723812. Its totient is φ = 4321574602.

The previous prime is 8643149161. The next prime is 8643149257. The reversal of 8643149206 is 6029413468.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×8643149206³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2160787300 + ... + 2160787303.

It is an arithmetic number, because the mean of its divisors is an integer number (3241180953).

Almost surely, 2^8643149206 is an apocalyptic number.

8643149206 is a deficient number, since it is larger than the sum of its proper divisors (4321574606).

8643149206 is a wasteful number, since it uses less digits than its factorization.

8643149206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4321574605.

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 8643149206 is about 92968.5387967349. The cubic root of 8643149206 is about 2052.2204143627.

The spelling of 8643149206 in words is "eight billion, six hundred forty-three million, one hundred forty-nine thousand, two hundred six".