1018900227 has 4 divisors (see below), whose sum is σ = 1358533640. Its totient is φ = 679266816.

The previous prime is 1018900217. The next prime is 1018900229. The reversal of 1018900227 is 7220098101.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1018900227 - 2²⁰ = 1017851651 is a prime.

It is a super-3 number, since 3×1018900227³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1018900194 and 1018900203.

It is not an unprimeable number, because it can be changed into a prime (1018900229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169816702 + ... + 169816707.

It is an arithmetic number, because the mean of its divisors is an integer number (339633410).

Almost surely, 2^1018900227 is an apocalyptic number.

1018900227 is a deficient number, since it is larger than the sum of its proper divisors (339633413).

1018900227 is an equidigital number, since it uses as much as digits as its factorization.

1018900227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339633412.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 1018900227 is about 31920.2165876111. The cubic root of 1018900227 is about 1006.2607962938.

Adding to 1018900227 its reverse (7220098101), we get a palindrome (8238998328).

The spelling of 1018900227 in words is "one billion, eighteen million, nine hundred thousand, two hundred twenty-seven".