181146413 has 32 divisors (see below), whose sum is σ = 226934784. Its totient is φ = 141210432.

The previous prime is 181146391. The next prime is 181146419. The reversal of 181146413 is 314641181.

It is not a de Polignac number, because 181146413 - 2⁶ = 181146349 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 (181146419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 279656 + ... + 280302.

It is an arithmetic number, because the mean of its divisors is an integer number (7091712).

Almost surely, 2^181146413 is an apocalyptic number.

It is an amenable number.

181146413 is a deficient number, since it is larger than the sum of its proper divisors (45788371).

181146413 is a wasteful number, since it uses less digits than its factorization.

181146413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761.

The product of its digits is 2304, while the sum is 29.

The square root of 181146413 is about 13459.0643434081. The cubic root of 181146413 is about 565.8177658779.

Adding to 181146413 its reverse (314641181), we get a palindrome (495787594).

The spelling of 181146413 in words is "one hundred eighty-one million, one hundred forty-six thousand, four hundred thirteen".