8143656994 has 32 divisors (see below), whose sum is σ = 14036832000. Its totient is φ = 3504468240.

The previous prime is 8143656991. The next prime is 8143657031. The reversal of 8143656994 is 4996563418.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (8143656991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 704449 + ... + 715915.

It is an arithmetic number, because the mean of its divisors is an integer number (438651000).

Almost surely, 2^8143656994 is an apocalyptic number.

8143656994 is a deficient number, since it is larger than the sum of its proper divisors (5893175006).

8143656994 is a wasteful number, since it uses less digits than its factorization.

8143656994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13198.

The product of its digits is 5598720, while the sum is 55.

The square root of 8143656994 is about 90242.2129272105. The cubic root of 8143656994 is about 2011.9004651845.

The spelling of 8143656994 in words is "eight billion, one hundred forty-three million, six hundred fifty-six thousand, nine hundred ninety-four".