2144646642 has 8 divisors (see below), whose sum is σ = 4289293296. Its totient is φ = 714882212.

The previous prime is 2144646631. The next prime is 2144646649. The reversal of 2144646642 is 2466464412.

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

2144646642 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 2144646642.

It is not an unprimeable number, because it can be changed into a prime (2144646649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178720548 + ... + 178720559.

It is an arithmetic number, because the mean of its divisors is an integer number (536161662).

Almost surely, 2^2144646642 is an apocalyptic number.

2144646642 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.

2144646642 is a wasteful number, since it uses less digits than its factorization.

2144646642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357441112.

The product of its digits is 221184, while the sum is 39.

The square root of 2144646642 is about 46310.3297548182. The cubic root of 2144646642 is about 1289.5907685753.

The spelling of 2144646642 in words is "two billion, one hundred forty-four million, six hundred forty-six thousand, six hundred forty-two".