181794212 has 6 divisors (see below), whose sum is σ = 318139878. Its totient is φ = 90897104.

The previous prime is 181794211. The next prime is 181794229. The reversal of 181794212 is 212497181.

It can be written as a sum of positive squares in only one way, i.e., 110965156 + 70829056 = 10534^2 + 8416^2 .

It is not an unprimeable number, because it can be changed into a prime (181794211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22724273 + ... + 22724280.

It is an arithmetic number, because the mean of its divisors is an integer number (53023313).

Almost surely, 2^181794212 is an apocalyptic number.

It is an amenable number.

181794212 is a deficient number, since it is larger than the sum of its proper divisors (136345666).

181794212 is a wasteful number, since it uses less digits than its factorization.

181794212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45448557 (or 45448555 counting only the distinct ones).

The product of its digits is 8064, while the sum is 35.

The square root of 181794212 is about 13483.1083953219. The cubic root of 181794212 is about 566.4914384771.

The spelling of 181794212 in words is "one hundred eighty-one million, seven hundred ninety-four thousand, two hundred twelve".