4644491121 has 24 divisors (see below), whose sum is σ = 6821771424. Its totient is φ = 3044321280.

The previous prime is 4644491101. The next prime is 4644491129. The reversal of 4644491121 is 1211944464.

It is a happy number.

4644491121 is a `hidden beast` number, since 4 + 6 + 44 + 491 + 121 = 666.

It is not a de Polignac number, because 4644491121 - 2²¹ = 4642393969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4644491129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 322801 + ... + 336881.

It is an arithmetic number, because the mean of its divisors is an integer number (284240476).

Almost surely, 2^4644491121 is an apocalyptic number.

It is an amenable number.

4644491121 is a deficient number, since it is larger than the sum of its proper divisors (2177280303).

4644491121 is a wasteful number, since it uses less digits than its factorization.

4644491121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14701 (or 14698 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 4644491121 is about 68150.5034537530. The cubic root of 4644491121 is about 1668.4481407627.

The spelling of 4644491121 in words is "four billion, six hundred forty-four million, four hundred ninety-one thousand, one hundred twenty-one".