181449242448 has 20 divisors (see below), whose sum is σ = 468743876448. Its totient is φ = 60483080800.

The previous prime is 181449242393. The next prime is 181449242473. The reversal of 181449242448 is 844242944181.

It is a self number, because there is not a number n which added to its sum of digits gives 181449242448.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1890096228 + ... + 1890096323.

Almost surely, 2^181449242448 is an apocalyptic number.

It is an amenable number.

181449242448 is an abundant number, since it is smaller than the sum of its proper divisors (287294634000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

181449242448 is a wasteful number, since it uses less digits than its factorization.

181449242448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3780192562 (or 3780192556 counting only the distinct ones).

The product of its digits is 2359296, while the sum is 51.

The spelling of 181449242448 in words is "one hundred eighty-one billion, four hundred forty-nine million, two hundred forty-two thousand, four hundred forty-eight".