2144888989 has 4 divisors (see below), whose sum is σ = 2238145056. Its totient is φ = 2051632924.

The previous prime is 2144888957. The next prime is 2144889037. The reversal of 2144888989 is 9898884412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2144888989 - 2⁵ = 2144888957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2144888909) 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, 46627999 + ... + 46628044.

It is an arithmetic number, because the mean of its divisors is an integer number (559536264).

Almost surely, 2^2144888989 is an apocalyptic number.

It is an amenable number.

2144888989 is a deficient number, since it is larger than the sum of its proper divisors (93256067).

2144888989 is an equidigital number, since it uses as much as digits as its factorization.

2144888989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93256066.

The product of its digits is 10616832, while the sum is 61.

The square root of 2144888989 is about 46312.9462353671. The cubic root of 2144888989 is about 1289.6393417180.

The spelling of 2144888989 in words is "two billion, one hundred forty-four million, eight hundred eighty-eight thousand, nine hundred eighty-nine".