2144650481 has 4 divisors (see below), whose sum is σ = 2147754864. Its totient is φ = 2141546100.

The previous prime is 2144650457. The next prime is 2144650483. The reversal of 2144650481 is 1840564412.

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 a de Polignac number, because none of the positive numbers 2^k-2144650481 is a prime.

It is a super-2 number, since 2×2144650481² = 9199051371307062722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2144650483) 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, 1551155 + ... + 1552536.

It is an arithmetic number, because the mean of its divisors is an integer number (536938716).

Almost surely, 2^2144650481 is an apocalyptic number.

It is an amenable number.

2144650481 is a deficient number, since it is larger than the sum of its proper divisors (3104383).

2144650481 is an equidigital number, since it uses as much as digits as its factorization.

2144650481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3104382.

The product of its (nonzero) digits is 30720, while the sum is 35.

The square root of 2144650481 is about 46310.3712034356. The cubic root of 2144650481 is about 1289.5915380472.

The spelling of 2144650481 in words is "two billion, one hundred forty-four million, six hundred fifty thousand, four hundred eighty-one".