181956948 has 12 divisors (see below), whose sum is σ = 424566240. Its totient is φ = 60652312.

The previous prime is 181956941. The next prime is 181956959. The reversal of 181956948 is 849659181.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 181956948.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181956941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7581528 + ... + 7581551.

It is an arithmetic number, because the mean of its divisors is an integer number (35380520).

Almost surely, 2^181956948 is an apocalyptic number.

It is an amenable number.

181956948 is an abundant number, since it is smaller than the sum of its proper divisors (242609292).

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

181956948 is a wasteful number, since it uses less digits than its factorization.

181956948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15163086 (or 15163084 counting only the distinct ones).

The product of its digits is 622080, while the sum is 51.

The square root of 181956948 is about 13489.1418555815. The cubic root of 181956948 is about 566.6604226917.

The spelling of 181956948 in words is "one hundred eighty-one million, nine hundred fifty-six thousand, nine hundred forty-eight".