1898897 has 24 divisors (see below), whose sum is σ = 2604672. Its totient is φ = 1360800.

The previous prime is 1898893. The next prime is 1898921. The reversal of 1898897 is 7988981.

It is a happy number.

It is not a de Polignac number, because 1898897 - 2² = 1898893 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1898893) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6872 + ... + 7142.

It is an arithmetic number, because the mean of its divisors is an integer number (108528).

2^1898897 is an apocalyptic number.

It is an amenable number.

1898897 is a deficient number, since it is larger than the sum of its proper divisors (705775).

1898897 is a wasteful number, since it uses less digits than its factorization.

1898897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309 (or 302 counting only the distinct ones).

The product of its digits is 290304, while the sum is 50.

The square root of 1898897 is about 1378.0047169731. The cubic root of 1898897 is about 123.8322610561.

It can be divided in two parts, 1 and 898897, that added together give a palindrome (898898).

The spelling of 1898897 in words is "one million, eight hundred ninety-eight thousand, eight hundred ninety-seven".