449166339181 has 4 divisors (see below), whose sum is σ = 513332959072. Its totient is φ = 384999719292.

The previous prime is 449166339173. The next prime is 449166339221. The reversal of 449166339181 is 181933661944.

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 449166339181 - 2³ = 449166339173 is a prime.

It is a super-4 number, since 4×449166339181⁴ (a number of 48 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449166334181) 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, 32083309935 + ... + 32083309948.

It is an arithmetic number, because the mean of its divisors is an integer number (128333239768).

Almost surely, 2^449166339181 is an apocalyptic number.

It is an amenable number.

449166339181 is a deficient number, since it is larger than the sum of its proper divisors (64166619891).

449166339181 is an equidigital number, since it uses as much as digits as its factorization.

449166339181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64166619890.

The product of its digits is 3359232, while the sum is 55.

The spelling of 449166339181 in words is "four hundred forty-nine billion, one hundred sixty-six million, three hundred thirty-nine thousand, one hundred eighty-one".