2228752618 has 4 divisors (see below), whose sum is σ = 3343128930. Its totient is φ = 1114376308.

The previous prime is 2228752597. The next prime is 2228752619. The reversal of 2228752618 is 8162578222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8162578222 = 2 ⋅4081289111.

It can be written as a sum of positive squares in only one way, i.e., 1884167649 + 344584969 = 43407^2 + 18563^2 .

It is not an unprimeable number, because it can be changed into a prime (2228752619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557188153 + ... + 557188156.

Almost surely, 2^2228752618 is an apocalyptic number.

2228752618 is a deficient number, since it is larger than the sum of its proper divisors (1114376312).

2228752618 is a wasteful number, since it uses less digits than its factorization.

2228752618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114376311.

The product of its digits is 215040, while the sum is 43.

The square root of 2228752618 is about 47209.6665737008. Note that the first 3 decimals coincide. The cubic root of 2228752618 is about 1306.2329120327.

The spelling of 2228752618 in words is "two billion, two hundred twenty-eight million, seven hundred fifty-two thousand, six hundred eighteen".