1548389 has 2 divisors, whose sum is σ = 1548390. Its totient is φ = 1548388.

The previous prime is 1548359. The next prime is 1548401. The reversal of 1548389 is 9838451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1119364 + 429025 = 1058^2 + 655^2 .

It is a cyclic number.

It is not a de Polignac number, because 1548389 - 2¹⁶ = 1482853 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1548359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 774194 + 774195.

It is an arithmetic number, because the mean of its divisors is an integer number (774195).

2^1548389 is an apocalyptic number.

It is an amenable number.

1548389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1548389 is an equidigital number, since it uses as much as digits as its factorization.

1548389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 38.

The square root of 1548389 is about 1244.3427984282. The cubic root of 1548389 is about 115.6893441719.

The spelling of 1548389 in words is "one million, five hundred forty-eight thousand, three hundred eighty-nine".