181216934 has 8 divisors (see below), whose sum is σ = 272061048. Its totient is φ = 90529920.

The previous prime is 181216897. The next prime is 181216939. The reversal of 181216934 is 439612181.

181216934 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 181216894 and 181216903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181216939) 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, 36347 + ... + 41030.

It is an arithmetic number, because the mean of its divisors is an integer number (34007631).

Almost surely, 2^181216934 is an apocalyptic number.

181216934 is a deficient number, since it is larger than the sum of its proper divisors (90844114).

181216934 is a wasteful number, since it uses less digits than its factorization.

181216934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78550.

The product of its digits is 10368, while the sum is 35.

The square root of 181216934 is about 13461.6839214119. The cubic root of 181216934 is about 565.8911813674.

The spelling of 181216934 in words is "one hundred eighty-one million, two hundred sixteen thousand, nine hundred thirty-four".