4371722161 has 9 divisors (see below), whose sum is σ = 4495585899. Its totient is φ = 4251187224.

The previous prime is 4371722153. The next prime is 4371722203. The reversal of 4371722161 is 1612271734.

The square root of 4371722161 is 66119.

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., 3911877025 + 459845136 = 62545^2 + 21444^2 .

It is not a de Polignac number, because 4371722161 - 2³ = 4371722153 is a prime.

It is a super-2 number, since 2×4371722161² = 38223909305957019842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4371722111) 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, 2445510 + ... + 2447296.

Almost surely, 2^4371722161 is an apocalyptic number.

4371722161 is the 66119-th square number.

4371722161 is the 33060-th centered octagonal number.

It is an amenable number.

4371722161 is a deficient number, since it is larger than the sum of its proper divisors (123863738).

4371722161 is an frugal number, since it uses more digits than its factorization.

4371722161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3648 (or 1824 counting only the distinct ones).

The product of its digits is 14112, while the sum is 34.

The cubic root of 4371722161 is about 1635.1245948063.

Adding to 4371722161 its reverse (1612271734), we get a palindrome (5983993895).

The spelling of 4371722161 in words is "four billion, three hundred seventy-one million, seven hundred twenty-two thousand, one hundred sixty-one".