4198521616 has 45 divisors (see below), whose sum is σ = 8268874869. Its totient is φ = 2065178112.

The previous prime is 4198521601. The next prime is 4198521619. The reversal of 4198521616 is 6161258914.

The square root of 4198521616 is 64796.

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

It can be written as a sum of positive squares in only one way, i.e., 1885296400 + 2313225216 = 43420^2 + 48096^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4198521619) 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 8 ways as a sum of consecutive naturals, for example, 25140765 + ... + 25140931.

Almost surely, 2^4198521616 is an apocalyptic number.

4198521616 is the 64796-th square number.

It is an amenable number.

4198521616 is a deficient number, since it is larger than the sum of its proper divisors (4070353253).

4198521616 is an frugal number, since it uses more digits than its factorization.

4198521616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536 (or 266 counting only the distinct ones).

The product of its digits is 103680, while the sum is 43.

The cubic root of 4198521616 is about 1613.2393168961.

The spelling of 4198521616 in words is "four billion, one hundred ninety-eight million, five hundred twenty-one thousand, six hundred sixteen".