181361043 has 6 divisors (see below), whose sum is σ = 261965964. Its totient is φ = 120907356.

The previous prime is 181361039. The next prime is 181361077. The reversal of 181361043 is 340163181.

181361043 is a `hidden beast` number, since 1 + 8 + 1 + 3 + 610 + 43 = 666.

It is not a de Polignac number, because 181361043 - 2² = 181361039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 181360998 and 181361016.

It is not an unprimeable number, because it can be changed into a prime (181351043) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10075605 + ... + 10075622.

It is an arithmetic number, because the mean of its divisors is an integer number (43660994).

Almost surely, 2^181361043 is an apocalyptic number.

181361043 is a deficient number, since it is larger than the sum of its proper divisors (80604921).

181361043 is a wasteful number, since it uses less digits than its factorization.

181361043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20151233 (or 20151230 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 181361043 is about 13467.0354198688. The cubic root of 181361043 is about 566.0411460222.

The spelling of 181361043 in words is "one hundred eighty-one million, three hundred sixty-one thousand, forty-three".