181405341 has 24 divisors (see below), whose sum is σ = 284704056. Its totient is φ = 110638080.

The previous prime is 181405337. The next prime is 181405349. The reversal of 181405341 is 143504181.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 14220441 + 167184900 = 3771^2 + 12930^2 .

It is not a de Polignac number, because 181405341 - 2² = 181405337 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181405349) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6361 + ... + 20081.

It is an arithmetic number, because the mean of its divisors is an integer number (11862669).

Almost surely, 2^181405341 is an apocalyptic number.

It is an amenable number.

181405341 is a deficient number, since it is larger than the sum of its proper divisors (103298715).

181405341 is a wasteful number, since it uses less digits than its factorization.

181405341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13853 (or 13850 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 181405341 is about 13468.6800021383. The cubic root of 181405341 is about 566.0872280418.

The spelling of 181405341 in words is "one hundred eighty-one million, four hundred five thousand, three hundred forty-one".