448713835181 has 4 divisors (see below), whose sum is σ = 457180134012. Its totient is φ = 440247536352.

The previous prime is 448713835169. The next prime is 448713835247. The reversal of 448713835181 is 181538317844.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 401279173156 + 47434662025 = 633466^2 + 217795^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-448713835181 is a prime.

It is a super-2 number, since 2×448713835181² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (53), and also a Moran number because the ratio is a prime number: 8466298777 = 448713835181 / (4 + 4 + 8 + 7 + 1 + 3 + 8 + 3 + 5 + 1 + 8 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (448713835111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4233149336 + ... + 4233149441.

It is an arithmetic number, because the mean of its divisors is an integer number (114295033503).

Almost surely, 2^448713835181 is an apocalyptic number.

It is an amenable number.

448713835181 is a deficient number, since it is larger than the sum of its proper divisors (8466298831).

448713835181 is an equidigital number, since it uses as much as digits as its factorization.

448713835181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8466298830.

The product of its digits is 2580480, while the sum is 53.

The spelling of 448713835181 in words is "four hundred forty-eight billion, seven hundred thirteen million, eight hundred thirty-five thousand, one hundred eighty-one".