220001335849 has 9 divisors (see below), whose sum is σ = 221206276407. Its totient is φ = 218802930984.

The previous prime is 220001335843. The next prime is 220001335877. The reversal of 220001335849 is 948533100022.

The square root of 220001335849 is 469043.

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., 39998000025 + 180003335824 = 199995^2 + 424268^2 .

It is not a de Polignac number, because 220001335849 - 2⁷ = 220001335721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220001335843) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 93338379 + ... + 93340735.

Almost surely, 2^220001335849 is an apocalyptic number.

220001335849 is the 469043-rd square number.

220001335849 is the 234522-nd centered octagonal number.

It is an amenable number.

220001335849 is a deficient number, since it is larger than the sum of its proper divisors (1204940558).

220001335849 is an frugal number, since it uses more digits than its factorization.

220001335849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5112 (or 2556 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The spelling of 220001335849 in words is "two hundred twenty billion, one million, three hundred thirty-five thousand, eight hundred forty-nine".