226181384397 has 8 divisors (see below), whose sum is σ = 335083532480. Its totient is φ = 150787589580.

The previous prime is 226181384383. The next prime is 226181384399. The reversal of 226181384397 is 793483181622.

It is a happy number.

226181384397 is a `hidden beast` number, since 2 + 2 + 618 + 13 + 8 + 4 + 3 + 9 + 7 = 666.

It is not a de Polignac number, because 226181384397 - 2⁶ = 226181384333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226181384399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4188544129 + ... + 4188544182.

It is an arithmetic number, because the mean of its divisors is an integer number (41885441560).

Almost surely, 2^226181384397 is an apocalyptic number.

226181384397 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

226181384397 is a deficient number, since it is larger than the sum of its proper divisors (108902148083).

226181384397 is an equidigital number, since it uses as much as digits as its factorization.

226181384397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8377088320 (or 8377088314 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The spelling of 226181384397 in words is "two hundred twenty-six billion, one hundred eighty-one million, three hundred eighty-four thousand, three hundred ninety-seven".