1898447 has 2 divisors, whose sum is σ = 1898448. Its totient is φ = 1898446.

The previous prime is 1898431. The next prime is 1898467. The reversal of 1898447 is 7448981.

It is a happy number.

1898447 is nontrivially palindromic in base 8.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1898447 - 2⁴ = 1898431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1898417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 949223 + 949224.

It is an arithmetic number, because the mean of its divisors is an integer number (949224).

2^1898447 is an apocalyptic number.

1898447 is a deficient number, since it is larger than the sum of its proper divisors (1).

1898447 is an equidigital number, since it uses as much as digits as its factorization.

1898447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64512, while the sum is 41.

The square root of 1898447 is about 1377.8414277412. The cubic root of 1898447 is about 123.8224783735.

The spelling of 1898447 in words is "one million, eight hundred ninety-eight thousand, four hundred forty-seven".