226081091689 has 2 divisors, whose sum is σ = 226081091690. Its totient is φ = 226081091688.

The previous prime is 226081091657. The next prime is 226081091771. The reversal of 226081091689 is 986190180622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119979104400 + 106101987289 = 346380^2 + 325733^2 .

It is a cyclic number.

It is not a de Polignac number, because 226081091689 - 2⁵ = 226081091657 is a prime.

It is a super-2 number, since 2×226081091689² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (226081091989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113040545844 + 113040545845.

It is an arithmetic number, because the mean of its divisors is an integer number (113040545845).

Almost surely, 2^226081091689 is an apocalyptic number.

It is an amenable number.

226081091689 is a deficient number, since it is larger than the sum of its proper divisors (1).

226081091689 is an equidigital number, since it uses as much as digits as its factorization.

226081091689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 746496, while the sum is 52.

The spelling of 226081091689 in words is "two hundred twenty-six billion, eighty-one million, ninety-one thousand, six hundred eighty-nine".