2206161773 has 4 divisors (see below), whose sum is σ = 2216617728. Its totient is φ = 2195705820.

The previous prime is 2206161767. The next prime is 2206161781. The reversal of 2206161773 is 3771616022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2206161773 - 2⁶ = 2206161709 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2206161733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5227661 + ... + 5228082.

It is an arithmetic number, because the mean of its divisors is an integer number (554154432).

Almost surely, 2^2206161773 is an apocalyptic number.

It is an amenable number.

2206161773 is a deficient number, since it is larger than the sum of its proper divisors (10455955).

2206161773 is a wasteful number, since it uses less digits than its factorization.

2206161773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10455954.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 2206161773 is about 46969.7963908723. The cubic root of 2206161773 is about 1301.8045497366.

Adding to 2206161773 its reverse (3771616022), we get a palindrome (5977777795).

The spelling of 2206161773 in words is "two billion, two hundred six million, one hundred sixty-one thousand, seven hundred seventy-three".