2143674678 has 8 divisors (see below), whose sum is σ = 4287349368. Its totient is φ = 714558224.

The previous prime is 2143674667. The next prime is 2143674679. The reversal of 2143674678 is 8764763412.

It is a happy number.

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

2143674678 is an admirable number.

It is a super-2 number, since 2×2143674678² = 9190682250196807368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143674679) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 178639551 + ... + 178639562.

It is an arithmetic number, because the mean of its divisors is an integer number (535918671).

Almost surely, 2^2143674678 is an apocalyptic number.

2143674678 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2143674678 is a wasteful number, since it uses less digits than its factorization.

2143674678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357279118.

The product of its digits is 1354752, while the sum is 48.

The square root of 2143674678 is about 46299.8345353415. The cubic root of 2143674678 is about 1289.3959229257.

The spelling of 2143674678 in words is "two billion, one hundred forty-three million, six hundred seventy-four thousand, six hundred seventy-eight".