8143686814 has 4 divisors (see below), whose sum is σ = 12215530224. Its totient is φ = 4071843406.

The previous prime is 8143686799. The next prime is 8143686827. The reversal of 8143686814 is 4186863418.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4186863418 = 2 ⋅2093431709.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2035921702 + ... + 2035921705.

It is an arithmetic number, because the mean of its divisors is an integer number (3053882556).

Almost surely, 2^8143686814 is an apocalyptic number.

8143686814 is a deficient number, since it is larger than the sum of its proper divisors (4071843410).

8143686814 is a wasteful number, since it uses less digits than its factorization.

8143686814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4071843409.

The product of its digits is 884736, while the sum is 49.

The square root of 8143686814 is about 90242.3781490714. The cubic root of 8143686814 is about 2011.9029208707.

The spelling of 8143686814 in words is "eight billion, one hundred forty-three million, six hundred eighty-six thousand, eight hundred fourteen".