229159381 has 4 divisors (see below), whose sum is σ = 249992064. Its totient is φ = 208326700.

The previous prime is 229159379. The next prime is 229159457. The reversal of 229159381 is 183951922.

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 229159381 - 2¹ = 229159379 is a prime.

It is a super-2 number, since 2×229159381² = 105028043800606322, 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 (229159321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10416325 + ... + 10416346.

It is an arithmetic number, because the mean of its divisors is an integer number (62498016).

Almost surely, 2^229159381 is an apocalyptic number.

It is an amenable number.

229159381 is a deficient number, since it is larger than the sum of its proper divisors (20832683).

229159381 is a wasteful number, since it uses less digits than its factorization.

229159381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20832682.

The product of its digits is 38880, while the sum is 40.

The square root of 229159381 is about 15138.0111309247. The cubic root of 229159381 is about 611.9452200459.

The spelling of 229159381 in words is "two hundred twenty-nine million, one hundred fifty-nine thousand, three hundred eighty-one".