226188999 has 12 divisors (see below), whose sum is σ = 326924416. Its totient is φ = 150697152.

The previous prime is 226188971. The next prime is 226189013. The reversal of 226188999 is 999881622.

It is not a de Polignac number, because 226188999 - 2¹⁶ = 226123463 is a prime.

It is a super-2 number, since 2×226188999² = 102322926537244002, 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 (226188199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8922 + ... + 23064.

Almost surely, 2^226188999 is an apocalyptic number.

226188999 is a deficient number, since it is larger than the sum of its proper divisors (100735417).

226188999 is a wasteful number, since it uses less digits than its factorization.

226188999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15926 (or 15923 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 54.

The square root of 226188999 is about 15039.5810779423. The cubic root of 226188999 is about 609.2896856026.

It can be divided in two parts, 226 and 188999, that added together give a square (189225 = 435²).

The spelling of 226188999 in words is "two hundred twenty-six million, one hundred eighty-eight thousand, nine hundred ninety-nine".