1489437121 has 2 divisors, whose sum is σ = 1489437122. Its totient is φ = 1489437120.

The previous prime is 1489437091. The next prime is 1489437137. The reversal of 1489437121 is 1217349841.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1093228096 + 396209025 = 33064^2 + 19905^2 .

It is an emirp because it is prime and its reverse (1217349841) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1489437121 is a prime.

It is not a weakly prime, because it can be changed into another prime (1489437221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 744718560 + 744718561.

It is an arithmetic number, because the mean of its divisors is an integer number (744718561).

Almost surely, 2^1489437121 is an apocalyptic number.

It is an amenable number.

1489437121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1489437121 is an equidigital number, since it uses as much as digits as its factorization.

1489437121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 40.

The square root of 1489437121 is about 38593.2263616298. The cubic root of 1489437121 is about 1142.0209154425.

The spelling of 1489437121 in words is "one billion, four hundred eighty-nine million, four hundred thirty-seven thousand, one hundred twenty-one".