209028182416 has 15 divisors (see below), whose sum is σ = 404995646731. Its totient is φ = 104513176816.

The previous prime is 209028182413. The next prime is 209028182431. The reversal of 209028182416 is 614281820902.

The square root of 209028182416 is 457196.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (209028182413) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1771635 + ... + 1885933.

Almost surely, 2^209028182416 is an apocalyptic number.

209028182416 is the 457196-th square number.

It is an amenable number.

209028182416 is a deficient number, since it is larger than the sum of its proper divisors (195967464315).

209028182416 is an frugal number, since it uses more digits than its factorization.

209028182416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228606 (or 114301 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 43.

The spelling of 209028182416 in words is "two hundred nine billion, twenty-eight million, one hundred eighty-two thousand, four hundred sixteen".