181944482 has 4 divisors (see below), whose sum is σ = 272916726. Its totient is φ = 90972240.

The previous prime is 181944479. The next prime is 181944493. The reversal of 181944482 is 284449181.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 284449181 = 163 ⋅1745087.

It can be written as a sum of positive squares in only one way, i.e., 108139201 + 73805281 = 10399^2 + 8591^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45486119 + ... + 45486122.

Almost surely, 2^181944482 is an apocalyptic number.

181944482 is a deficient number, since it is larger than the sum of its proper divisors (90972244).

181944482 is an equidigital number, since it uses as much as digits as its factorization.

181944482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90972243.

The product of its digits is 73728, while the sum is 41.

The square root of 181944482 is about 13488.6797723128. The cubic root of 181944482 is about 566.6474816265.

The spelling of 181944482 in words is "one hundred eighty-one million, nine hundred forty-four thousand, four hundred eighty-two".