2196746281 has 4 divisors (see below), whose sum is σ = 2196923652. Its totient is φ = 2196568912.

The previous prime is 2196746243. The next prime is 2196746297. The reversal of 2196746281 is 1826476912.

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

It can be written as a sum of positive squares in 2 ways, for example, as 184416400 + 2012329881 = 13580^2 + 44859^2 .

It is a cyclic number.

It is not a de Polignac number, because 2196746281 - 2¹⁵ = 2196713513 is a prime.

It is a super-2 number, since 2×2196746281² = 9651388446174661922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2196746221) 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, 68590 + ... + 95383.

It is an arithmetic number, because the mean of its divisors is an integer number (549230913).

Almost surely, 2^2196746281 is an apocalyptic number.

It is an amenable number.

2196746281 is a deficient number, since it is larger than the sum of its proper divisors (177371).

2196746281 is a wasteful number, since it uses less digits than its factorization.

2196746281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177370.

The product of its digits is 290304, while the sum is 46.

The square root of 2196746281 is about 46869.4600032900. The cubic root of 2196746281 is about 1299.9499548782.

The spelling of 2196746281 in words is "two billion, one hundred ninety-six million, seven hundred forty-six thousand, two hundred eighty-one".