229137156 has 18 divisors (see below), whose sum is σ = 579207902. Its totient is φ = 76379040.

The previous prime is 229137121. The next prime is 229137163. The reversal of 229137156 is 651731922.

It can be written as a sum of positive squares in only one way, i.e., 225000000 + 4137156 = 15000^2 + 2034^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 6364921 = 229137156 / (2 + 2 + 9 + 1 + 3 + 7 + 1 + 5 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 229137156.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3182425 + ... + 3182496.

Almost surely, 2^229137156 is an apocalyptic number.

It is an amenable number.

229137156 is an abundant number, since it is smaller than the sum of its proper divisors (350070746).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

229137156 is a wasteful number, since it uses less digits than its factorization.

229137156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6364931 (or 6364926 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The square root of 229137156 is about 15137.2770338658. The cubic root of 229137156 is about 611.9254362573.

The spelling of 229137156 in words is "two hundred twenty-nine million, one hundred thirty-seven thousand, one hundred fifty-six".