181434061 has 4 divisors (see below), whose sum is σ = 185859324. Its totient is φ = 177008800.

The previous prime is 181434049. The next prime is 181434079. The reversal of 181434061 is 160434181.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 90136036 + 91298025 = 9494^2 + 9555^2 .

It is a cyclic number.

It is not a de Polignac number, because 181434061 - 2¹³ = 181425869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181434031) 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, 2212570 + ... + 2212651.

It is an arithmetic number, because the mean of its divisors is an integer number (46464831).

Almost surely, 2^181434061 is an apocalyptic number.

It is an amenable number.

181434061 is a deficient number, since it is larger than the sum of its proper divisors (4425263).

181434061 is an equidigital number, since it uses as much as digits as its factorization.

181434061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4425262.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 181434061 is about 13469.7461371772. The cubic root of 181434061 is about 566.1171006781.

The spelling of 181434061 in words is "one hundred eighty-one million, four hundred thirty-four thousand, sixty-one".