2210161643 has 4 divisors (see below), whose sum is σ = 2326485960. Its totient is φ = 2093837328.

The previous prime is 2210161637. The next prime is 2210161729. The reversal of 2210161643 is 3461610122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2210161643 - 2¹⁶ = 2210096107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2210161633) 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, 58162130 + ... + 58162167.

It is an arithmetic number, because the mean of its divisors is an integer number (581621490).

Almost surely, 2^2210161643 is an apocalyptic number.

2210161643 is a deficient number, since it is larger than the sum of its proper divisors (116324317).

2210161643 is a wasteful number, since it uses less digits than its factorization.

2210161643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116324316.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 2210161643 is about 47012.3562800249. The cubic root of 2210161643 is about 1302.5908180455.

Adding to 2210161643 its reverse (3461610122), we get a palindrome (5671771765).

The spelling of 2210161643 in words is "two billion, two hundred ten million, one hundred sixty-one thousand, six hundred forty-three".