2144155333 has 4 divisors (see below), whose sum is σ = 2184611148. Its totient is φ = 2103699520.

The previous prime is 2144155327. The next prime is 2144155357. The reversal of 2144155333 is 3335514412.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 561547809 + 1582607524 = 23697^2 + 39782^2 .

It is a cyclic number.

It is not a de Polignac number, because 2144155333 - 2⁹ = 2144154821 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2144155295 and 2144155304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2144155033) 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, 20227828 + ... + 20227933.

It is an arithmetic number, because the mean of its divisors is an integer number (546152787).

Almost surely, 2^2144155333 is an apocalyptic number.

It is an amenable number.

2144155333 is a deficient number, since it is larger than the sum of its proper divisors (40455815).

2144155333 is an equidigital number, since it uses as much as digits as its factorization.

2144155333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40455814.

The product of its digits is 21600, while the sum is 31.

The square root of 2144155333 is about 46305.0249217080. The cubic root of 2144155333 is about 1289.4922852281.

Adding to 2144155333 its reverse (3335514412), we get a palindrome (5479669745).

The spelling of 2144155333 in words is "two billion, one hundred forty-four million, one hundred fifty-five thousand, three hundred thirty-three".