181479641 has 8 divisors (see below), whose sum is σ = 219605760. Its totient is φ = 146403648.

The previous prime is 181479619. The next prime is 181479667. The reversal of 181479641 is 146974181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 181479641 - 2⁶ = 181479577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (181479691) 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 7 ways as a sum of consecutive naturals, for example, 762401 + ... + 762638.

It is an arithmetic number, because the mean of its divisors is an integer number (27450720).

Almost surely, 2^181479641 is an apocalyptic number.

It is an amenable number.

181479641 is a deficient number, since it is larger than the sum of its proper divisors (38126119).

181479641 is a wasteful number, since it uses less digits than its factorization.

181479641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1525063.

The product of its digits is 48384, while the sum is 41.

The square root of 181479641 is about 13471.4379707587. The cubic root of 181479641 is about 566.1645034954.

The spelling of 181479641 in words is "one hundred eighty-one million, four hundred seventy-nine thousand, six hundred forty-one".