226913881509 has 36 divisors (see below), whose sum is σ = 381591261324. Its totient is φ = 129558223872.

The previous prime is 226913881489. The next prime is 226913881529. The reversal of 226913881509 is 905188319622.

226913881509 is a `hidden beast` number, since 2 + 26 + 9 + 1 + 38 + 81 + 509 = 666.

It is an interprime number because it is at equal distance from previous prime (226913881489) and next prime (226913881529).

It can be written as a sum of positive squares in 2 ways, for example, as 49719188484 + 177194693025 = 222978^2 + 420945^2 .

It is not a de Polignac number, because 226913881509 - 2¹² = 226913877413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226913881529) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 325299 + ... + 748095.

It is an arithmetic number, because the mean of its divisors is an integer number (10599757259).

Almost surely, 2^226913881509 is an apocalyptic number.

It is an amenable number.

226913881509 is a deficient number, since it is larger than the sum of its proper divisors (154677379815).

226913881509 is a wasteful number, since it uses less digits than its factorization.

226913881509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424034 (or 424024 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 54.

The spelling of 226913881509 in words is "two hundred twenty-six billion, nine hundred thirteen million, eight hundred eighty-one thousand, five hundred nine".