2194079281 has 9 divisors (see below), whose sum is σ = 2268640569. Its totient is φ = 2121897300.

The previous prime is 2194079263. The next prime is 2194079287. The reversal of 2194079281 is 1829704912.

It is a happy number.

The square root of 2194079281 is 46841.

It is a perfect power (a square), and thus also a powerful number.

2194079281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2194079281 - 2¹⁵ = 2194046513 is a prime.

It is a super-2 number, since 2×2194079281² = 9627967782626953922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2194079287) 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, 1451316 + ... + 1452826.

Almost surely, 2^2194079281 is an apocalyptic number.

2194079281 is the 46841-st square number.

2194079281 is the 23421-st centered octagonal number.

It is an amenable number.

2194079281 is a deficient number, since it is larger than the sum of its proper divisors (74561288).

2194079281 is an frugal number, since it uses more digits than its factorization.

2194079281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3084 (or 1542 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 43.

The cubic root of 2194079281 is about 1299.4236658310.

The spelling of 2194079281 in words is "two billion, one hundred ninety-four million, seventy-nine thousand, two hundred eighty-one".