2228491117 has 4 divisors (see below), whose sum is σ = 2228694876. Its totient is φ = 2228287360.

The previous prime is 2228491099. The next prime is 2228491123. The reversal of 2228491117 is 7111948222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7111948222 = 2 ⋅3555974111.

It can be written as a sum of positive squares in 2 ways, for example, as 1950635556 + 277855561 = 44166^2 + 16669^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2228491117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2228491217) 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, 84484 + ... + 107677.

It is an arithmetic number, because the mean of its divisors is an integer number (557173719).

Almost surely, 2^2228491117 is an apocalyptic number.

It is an amenable number.

2228491117 is a deficient number, since it is larger than the sum of its proper divisors (203759).

2228491117 is a wasteful number, since it uses less digits than its factorization.

2228491117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203758.

The product of its digits is 16128, while the sum is 37.

The square root of 2228491117 is about 47206.8969219541. The cubic root of 2228491117 is about 1306.1818229811.

The spelling of 2228491117 in words is "two billion, two hundred twenty-eight million, four hundred ninety-one thousand, one hundred seventeen".