181473233 has 2 divisors, whose sum is σ = 181473234. Its totient is φ = 181473232.

The previous prime is 181473223. The next prime is 181473269. The reversal of 181473233 is 332374181.

181473233 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 155176849 + 26296384 = 12457^2 + 5128^2 .

It is a cyclic number.

It is not a de Polignac number, because 181473233 - 2⁴ = 181473217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 181473233.

It is not a weakly prime, because it can be changed into another prime (181473223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90736616 + 90736617.

It is an arithmetic number, because the mean of its divisors is an integer number (90736617).

Almost surely, 2^181473233 is an apocalyptic number.

It is an amenable number.

181473233 is a deficient number, since it is larger than the sum of its proper divisors (1).

181473233 is an equidigital number, since it uses as much as digits as its factorization.

181473233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 32.

The square root of 181473233 is about 13471.2001321337. The cubic root of 181473233 is about 566.1578397087.

The spelling of 181473233 in words is "one hundred eighty-one million, four hundred seventy-three thousand, two hundred thirty-three".