181444167396 has 48 divisors (see below), whose sum is σ = 470492841280. Its totient is φ = 60470841600.

The previous prime is 181444167391. The next prime is 181444167407. The reversal of 181444167396 is 693761444181.

It is a happy number.

181444167396 is a `hidden beast` number, since 1 + 8 + 1 + 444 + 167 + 39 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (181444167391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 488340 + ... + 775476.

Almost surely, 2^181444167396 is an apocalyptic number.

It is an amenable number.

181444167396 is an abundant number, since it is smaller than the sum of its proper divisors (289048673884).

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

181444167396 is a wasteful number, since it uses less digits than its factorization.

181444167396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293001 (or 292993 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The spelling of 181444167396 in words is "one hundred eighty-one billion, four hundred forty-four million, one hundred sixty-seven thousand, three hundred ninety-six".