2144505081 has 8 divisors (see below), whose sum is σ = 2906214784. Its totient is φ = 1406232720.

The previous prime is 2144505071. The next prime is 2144505127. The reversal of 2144505081 is 1805054412.

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

It is not a de Polignac number, because 2144505081 - 2⁷ = 2144504953 is a prime.

It is a super-2 number, since 2×2144505081² = 9197804084869633122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2144505031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5859121 + ... + 5859486.

It is an arithmetic number, because the mean of its divisors is an integer number (363276848).

Almost surely, 2^2144505081 is an apocalyptic number.

It is an amenable number.

2144505081 is a deficient number, since it is larger than the sum of its proper divisors (761709703).

2144505081 is a wasteful number, since it uses less digits than its factorization.

2144505081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11718671.

The product of its (nonzero) digits is 6400, while the sum is 30.

The square root of 2144505081 is about 46308.8013340877. The cubic root of 2144505081 is about 1289.5623940835.

Adding to 2144505081 its reverse (1805054412), we get a palindrome (3949559493).

The spelling of 2144505081 in words is "two billion, one hundred forty-four million, five hundred five thousand, eighty-one".