361643020 has 12 divisors (see below), whose sum is σ = 759450384. Its totient is φ = 144657200.

The previous prime is 361643003. The next prime is 361643071. The reversal of 361643020 is 20346163.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 9041056 + ... + 9041095.

It is an arithmetic number, because the mean of its divisors is an integer number (63287532).

Almost surely, 2^361643020 is an apocalyptic number.

It is an amenable number.

361643020 is an abundant number, since it is smaller than the sum of its proper divisors (397807364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

361643020 is a wasteful number, since it uses less digits than its factorization.

361643020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18082160 (or 18082158 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 361643020 is about 19016.9140503921. The cubic root of 361643020 is about 712.4592495417.

Adding to 361643020 its reverse (20346163), we get a palindrome (381989183).

The spelling of 361643020 in words is "three hundred sixty-one million, six hundred forty-three thousand, twenty".