1489422757 has 2 divisors, whose sum is σ = 1489422758. Its totient is φ = 1489422756.

The previous prime is 1489422731. The next prime is 1489422793. The reversal of 1489422757 is 7572249841.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1444076001 + 45346756 = 38001^2 + 6734^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1489422757 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1489422757.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1489429757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 744711378 + 744711379.

It is an arithmetic number, because the mean of its divisors is an integer number (744711379).

Almost surely, 2^1489422757 is an apocalyptic number.

It is an amenable number.

1489422757 is a deficient number, since it is larger than the sum of its proper divisors (1).

1489422757 is an equidigital number, since it uses as much as digits as its factorization.

1489422757 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1128960, while the sum is 49.

The square root of 1489422757 is about 38593.0402663485. The cubic root of 1489422757 is about 1142.0172442477.

The spelling of 1489422757 in words is "one billion, four hundred eighty-nine million, four hundred twenty-two thousand, seven hundred fifty-seven".