481644149 has 4 divisors (see below), whose sum is σ = 550450464. Its totient is φ = 412837836.

The previous prime is 481644131. The next prime is 481644157. The reversal of 481644149 is 941446184.

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 481644149 - 2²⁸ = 213208693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (481644169) 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 3 ways as a sum of consecutive naturals, for example, 34403147 + ... + 34403160.

It is an arithmetic number, because the mean of its divisors is an integer number (137612616).

Almost surely, 2^481644149 is an apocalyptic number.

It is an amenable number.

481644149 is a deficient number, since it is larger than the sum of its proper divisors (68806315).

481644149 is an equidigital number, since it uses as much as digits as its factorization.

481644149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68806314.

The product of its digits is 110592, while the sum is 41.

The square root of 481644149 is about 21946.3926192894. The cubic root of 481644149 is about 783.8664852509.

The spelling of 481644149 in words is "four hundred eighty-one million, six hundred forty-four thousand, one hundred forty-nine".