22918073 has 2 divisors, whose sum is σ = 22918074. Its totient is φ = 22918072.

The previous prime is 22918069. The next prime is 22918111. The reversal of 22918073 is 37081922.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22915369 + 2704 = 4787^2 + 52^2 .

It is a cyclic number.

It is not a de Polignac number, because 22918073 - 2² = 22918069 is a prime.

It is a super-3 number, since 3×22918073³ (a number of 23 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (22918003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11459036 + 11459037.

It is an arithmetic number, because the mean of its divisors is an integer number (11459037).

Almost surely, 2^22918073 is an apocalyptic number.

It is an amenable number.

22918073 is a deficient number, since it is larger than the sum of its proper divisors (1).

22918073 is an equidigital number, since it uses as much as digits as its factorization.

22918073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 22918073 is about 4787.2824232543. The cubic root of 22918073 is about 284.0486303353.

Adding to 22918073 its reverse (37081922), we get a palindrome (59999995).

The spelling of 22918073 in words is "twenty-two million, nine hundred eighteen thousand, seventy-three".