1897227 has 6 divisors (see below), whose sum is σ = 2740452. Its totient is φ = 1264812.

The previous prime is 1897219. The next prime is 1897229. The reversal of 1897227 is 7227981.

It is not a de Polignac number, because 1897227 - 2³ = 1897219 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1897191 and 1897200.

It is not an unprimeable number, because it can be changed into a prime (1897229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 105393 + ... + 105410.

It is an arithmetic number, because the mean of its divisors is an integer number (456742).

2^1897227 is an apocalyptic number.

1897227 is a deficient number, since it is larger than the sum of its proper divisors (843225).

1897227 is a wasteful number, since it uses less digits than its factorization.

1897227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210809 (or 210806 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The square root of 1897227 is about 1377.3986351090. The cubic root of 1897227 is about 123.7959486548.

The spelling of 1897227 in words is "one million, eight hundred ninety-seven thousand, two hundred twenty-seven".