22618423393 has 2 divisors, whose sum is σ = 22618423394. Its totient is φ = 22618423392.

The previous prime is 22618423369. The next prime is 22618423409. The reversal of 22618423393 is 39332481622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15700841809 + 6917581584 = 125303^2 + 83172^2 .

It is a cyclic number.

It is not a de Polignac number, because 22618423393 - 2⁵ = 22618423361 is a prime.

It is not a weakly prime, because it can be changed into another prime (22618424393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11309211696 + 11309211697.

It is an arithmetic number, because the mean of its divisors is an integer number (11309211697).

Almost surely, 2^22618423393 is an apocalyptic number.

It is an amenable number.

22618423393 is a deficient number, since it is larger than the sum of its proper divisors (1).

22618423393 is an equidigital number, since it uses as much as digits as its factorization.

22618423393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 373248, while the sum is 43.

The spelling of 22618423393 in words is "twenty-two billion, six hundred eighteen million, four hundred twenty-three thousand, three hundred ninety-three".