1489238609 has 2 divisors, whose sum is σ = 1489238610. Its totient is φ = 1489238608.

The previous prime is 1489238603. The next prime is 1489238627. The reversal of 1489238609 is 9068329841.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1315657984 + 173580625 = 36272^2 + 13175^2 .

It is a cyclic number.

It is not a de Polignac number, because 1489238609 - 2⁴ = 1489238593 is a prime.

It is not a weakly prime, because it can be changed into another prime (1489238603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 744619304 + 744619305.

It is an arithmetic number, because the mean of its divisors is an integer number (744619305).

Almost surely, 2^1489238609 is an apocalyptic number.

It is an amenable number.

1489238609 is a deficient number, since it is larger than the sum of its proper divisors (1).

1489238609 is an equidigital number, since it uses as much as digits as its factorization.

1489238609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 746496, while the sum is 50.

The square root of 1489238609 is about 38590.6544256508. The cubic root of 1489238609 is about 1141.9701770516.

The spelling of 1489238609 in words is "one billion, four hundred eighty-nine million, two hundred thirty-eight thousand, six hundred nine".