226162991 has 2 divisors, whose sum is σ = 226162992. Its totient is φ = 226162990.

The previous prime is 226162987. The next prime is 226163027. The reversal of 226162991 is 199261622.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 226162991 - 2² = 226162987 is a prime.

It is a super-2 number, since 2×226162991² = 102299396996132162, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (226162921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113081495 + 113081496.

It is an arithmetic number, because the mean of its divisors is an integer number (113081496).

Almost surely, 2^226162991 is an apocalyptic number.

226162991 is a deficient number, since it is larger than the sum of its proper divisors (1).

226162991 is an equidigital number, since it uses as much as digits as its factorization.

226162991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 38.

The square root of 226162991 is about 15038.7164013422. The cubic root of 226162991 is about 609.2663319565.

The spelling of 226162991 in words is "two hundred twenty-six million, one hundred sixty-two thousand, nine hundred ninety-one".