1489720259 has 2 divisors, whose sum is σ = 1489720260. Its totient is φ = 1489720258.

The previous prime is 1489720249. The next prime is 1489720273. The reversal of 1489720259 is 9520279841.

It is a weak prime.

It is an emirp because it is prime and its reverse (9520279841) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1489720259 - 2¹⁶ = 1489654723 is a prime.

It is not a weakly prime, because it can be changed into another prime (1489720229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 744860129 + 744860130.

It is an arithmetic number, because the mean of its divisors is an integer number (744860130).

Almost surely, 2^1489720259 is an apocalyptic number.

1489720259 is a deficient number, since it is larger than the sum of its proper divisors (1).

1489720259 is an equidigital number, since it uses as much as digits as its factorization.

1489720259 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 47.

The square root of 1489720259 is about 38596.8944217019. The cubic root of 1489720259 is about 1142.0932758947.

The spelling of 1489720259 in words is "one billion, four hundred eighty-nine million, seven hundred twenty thousand, two hundred fifty-nine".