223537189 has 2 divisors, whose sum is σ = 223537190. Its totient is φ = 223537188.

The previous prime is 223537183. The next prime is 223537201. The reversal of 223537189 is 981735322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123876900 + 99660289 = 11130^2 + 9983^2 .

It is a cyclic number.

It is not a de Polignac number, because 223537189 - 2⁵ = 223537157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223537183) 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, 111768594 + 111768595.

It is an arithmetic number, because the mean of its divisors is an integer number (111768595).

Almost surely, 2^223537189 is an apocalyptic number.

It is an amenable number.

223537189 is a deficient number, since it is larger than the sum of its proper divisors (1).

223537189 is an equidigital number, since it uses as much as digits as its factorization.

223537189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 40.

The square root of 223537189 is about 14951.1601222113. The cubic root of 223537189 is about 606.8992420606.

The spelling of 223537189 in words is "two hundred twenty-three million, five hundred thirty-seven thousand, one hundred eighty-nine".