181369118946 has 16 divisors (see below), whose sum is σ = 362866312224. Its totient is φ = 60435027264.

The previous prime is 181369118929. The next prime is 181369118989. The reversal of 181369118946 is 649811963181.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5318016 + ... + 5352011.

It is an arithmetic number, because the mean of its divisors is an integer number (22679144514).

Almost surely, 2^181369118946 is an apocalyptic number.

181369118946 is an abundant number, since it is smaller than the sum of its proper divisors (181497193278).

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

181369118946 is a wasteful number, since it uses less digits than its factorization.

181369118946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10672865.

The product of its digits is 2239488, while the sum is 57.

The spelling of 181369118946 in words is "one hundred eighty-one billion, three hundred sixty-nine million, one hundred eighteen thousand, nine hundred forty-six".