22358813 has 2 divisors, whose sum is σ = 22358814. Its totient is φ = 22358812.

The previous prime is 22358779. The next prime is 22358837. The reversal of 22358813 is 31885322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16297369 + 6061444 = 4037^2 + 2462^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22358813 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22358813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22358863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11179406 + 11179407.

It is an arithmetic number, because the mean of its divisors is an integer number (11179407).

Almost surely, 2^22358813 is an apocalyptic number.

It is an amenable number.

22358813 is a deficient number, since it is larger than the sum of its proper divisors (1).

22358813 is an equidigital number, since it uses as much as digits as its factorization.

22358813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 32.

The square root of 22358813 is about 4728.5106534722. The cubic root of 22358813 is about 281.7190712029.

The spelling of 22358813 in words is "twenty-two million, three hundred fifty-eight thousand, eight hundred thirteen".