1489941889 has 2 divisors, whose sum is σ = 1489941890. Its totient is φ = 1489941888.

The previous prime is 1489941841. The next prime is 1489941907. The reversal of 1489941889 is 9881499841.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1370258289 + 119683600 = 37017^2 + 10940^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1489941889 is a prime.

It is not a weakly prime, because it can be changed into another prime (1489741889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 744970944 + 744970945.

It is an arithmetic number, because the mean of its divisors is an integer number (744970945).

Almost surely, 2^1489941889 is an apocalyptic number.

It is an amenable number.

1489941889 is a deficient number, since it is larger than the sum of its proper divisors (1).

1489941889 is an equidigital number, since it uses as much as digits as its factorization.

1489941889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5971968, while the sum is 61.

The square root of 1489941889 is about 38599.7654008415. The cubic root of 1489941889 is about 1142.1499105950.

The spelling of 1489941889 in words is "one billion, four hundred eighty-nine million, nine hundred forty-one thousand, eight hundred eighty-nine".