1898249 has 2 divisors, whose sum is σ = 1898250. Its totient is φ = 1898248.

The previous prime is 1898243. The next prime is 1898257. The reversal of 1898249 is 9428981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1452025 + 446224 = 1205^2 + 668^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1898249 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1898243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 949124 + 949125.

It is an arithmetic number, because the mean of its divisors is an integer number (949125).

2^1898249 is an apocalyptic number.

It is an amenable number.

1898249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1898249 is an equidigital number, since it uses as much as digits as its factorization.

1898249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 41.

The square root of 1898249 is about 1377.7695743483. The cubic root of 1898249 is about 123.8181735034.

The spelling of 1898249 in words is "one million, eight hundred ninety-eight thousand, two hundred forty-nine".