5643671814 has 64 divisors (see below), whose sum is σ = 13763796480. Its totient is φ = 1699932960.

The previous prime is 5643671801. The next prime is 5643671833. The reversal of 5643671814 is 4181763465.

5643671814 is a `hidden beast` number, since 564 + 3 + 6 + 7 + 1 + 81 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 5643671814.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70752 + ... + 127644.

It is an arithmetic number, because the mean of its divisors is an integer number (215059320).

Almost surely, 2^5643671814 is an apocalyptic number.

5643671814 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 5643671814, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6881898240).

5643671814 is an abundant number, since it is smaller than the sum of its proper divisors (8120124666).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5643671814 is a wasteful number, since it uses less digits than its factorization.

5643671814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57082 (or 57076 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 5643671814 is about 75124.3756313488. The cubic root of 5643671814 is about 1780.4122907690.

The spelling of 5643671814 in words is "five billion, six hundred forty-three million, six hundred seventy-one thousand, eight hundred fourteen".