2144661533 has 4 divisors (see below), whose sum is σ = 2451041760. Its totient is φ = 1838281308.

The previous prime is 2144661509. The next prime is 2144661539. The reversal of 2144661533 is 3351664412.

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 2144661533 - 2¹⁶ = 2144595997 is a prime.

It is a super-2 number, since 2×2144661533² = 9199146182259820178, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2144661493 and 2144661502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2144661539) 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, 153190103 + ... + 153190116.

It is an arithmetic number, because the mean of its divisors is an integer number (612760440).

Almost surely, 2^2144661533 is an apocalyptic number.

It is an amenable number.

2144661533 is a deficient number, since it is larger than the sum of its proper divisors (306380227).

2144661533 is an equidigital number, since it uses as much as digits as its factorization.

2144661533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306380226.

The product of its digits is 51840, while the sum is 35.

The square root of 2144661533 is about 46310.4905286049. The cubic root of 2144661533 is about 1289.5937532552.

The spelling of 2144661533 in words is "two billion, one hundred forty-four million, six hundred sixty-one thousand, five hundred thirty-three".