1898872849 has 2 divisors, whose sum is σ = 1898872850. Its totient is φ = 1898872848.

The previous prime is 1898872793. The next prime is 1898872951. The reversal of 1898872849 is 9482788981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1267858449 + 631014400 = 35607^2 + 25120^2 .

It is a cyclic number.

It is not a de Polignac number, because 1898872849 - 2¹⁷ = 1898741777 is a prime.

It is not a weakly prime, because it can be changed into another prime (1898872649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 949436424 + 949436425.

It is an arithmetic number, because the mean of its divisors is an integer number (949436425).

Almost surely, 2^1898872849 is an apocalyptic number.

It is an amenable number.

1898872849 is a deficient number, since it is larger than the sum of its proper divisors (1).

1898872849 is an equidigital number, since it uses as much as digits as its factorization.

1898872849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18579456, while the sum is 64.

The square root of 1898872849 is about 43576.0582086081. The cubic root of 1898872849 is about 1238.3173606965.

The spelling of 1898872849 in words is "one billion, eight hundred ninety-eight million, eight hundred seventy-two thousand, eight hundred forty-nine".