2271694249 has 4 divisors (see below), whose sum is σ = 2478211920. Its totient is φ = 2065176580.

The previous prime is 2271694247. The next prime is 2271694253. The reversal of 2271694249 is 9424961722.

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 2271694249 - 2¹ = 2271694247 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2271694199 and 2271694208.

It is not an unprimeable number, because it can be changed into a prime (2271694247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103258819 + ... + 103258840.

It is an arithmetic number, because the mean of its divisors is an integer number (619552980).

Almost surely, 2^2271694249 is an apocalyptic number.

It is an amenable number.

2271694249 is a deficient number, since it is larger than the sum of its proper divisors (206517671).

2271694249 is a wasteful number, since it uses less digits than its factorization.

2271694249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206517670.

The product of its digits is 435456, while the sum is 46.

The square root of 2271694249 is about 47662.2937865982. The cubic root of 2271694249 is about 1314.5687162916.

The spelling of 2271694249 in words is "two billion, two hundred seventy-one million, six hundred ninety-four thousand, two hundred forty-nine".