1890227 has 2 divisors, whose sum is σ = 1890228. Its totient is φ = 1890226.

The previous prime is 1890221. The next prime is 1890241. The reversal of 1890227 is 7220981.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (7220981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1890227 - 2⁴ = 1890211 is a prime.

It is a super-2 number, since 2×1890227² = 7145916223058, which contains 22 as substring.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1890227.

It is not a weakly prime, because it can be changed into another prime (1890221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 945113 + 945114.

It is an arithmetic number, because the mean of its divisors is an integer number (945114).

2^1890227 is an apocalyptic number.

1890227 is a deficient number, since it is larger than the sum of its proper divisors (1).

1890227 is an equidigital number, since it uses as much as digits as its factorization.

1890227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 1890227 is about 1374.8552651097. The cubic root of 1890227 is about 123.6435086996.

The spelling of 1890227 in words is "one million, eight hundred ninety thousand, two hundred twenty-seven".