226630181 has 4 divisors (see below), whose sum is σ = 233940864. Its totient is φ = 219319500.

The previous prime is 226630177. The next prime is 226630219. The reversal of 226630181 is 181036622.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 226630181 - 2² = 226630177 is a prime.

It is a super-2 number, since 2×226630181² = 102722477880185522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226630681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3655295 + ... + 3655356.

It is an arithmetic number, because the mean of its divisors is an integer number (58485216).

Almost surely, 2^226630181 is an apocalyptic number.

It is an amenable number.

226630181 is a deficient number, since it is larger than the sum of its proper divisors (7310683).

226630181 is an equidigital number, since it uses as much as digits as its factorization.

226630181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7310682.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 226630181 is about 15054.2412960601. The cubic root of 226630181 is about 609.6855684889.

The spelling of 226630181 in words is "two hundred twenty-six million, six hundred thirty thousand, one hundred eighty-one".