145828489 has 2 divisors, whose sum is σ = 145828490. Its totient is φ = 145828488.

The previous prime is 145828469. The next prime is 145828511. The reversal of 145828489 is 984828541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128255625 + 17572864 = 11325^2 + 4192^2 .

It is a cyclic number.

It is not a de Polignac number, because 145828489 - 2⁵ = 145828457 is a prime.

It is not a weakly prime, because it can be changed into another prime (145828469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72914244 + 72914245.

It is an arithmetic number, because the mean of its divisors is an integer number (72914245).

Almost surely, 2^145828489 is an apocalyptic number.

It is an amenable number.

145828489 is a deficient number, since it is larger than the sum of its proper divisors (1).

145828489 is an equidigital number, since it uses as much as digits as its factorization.

145828489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 737280, while the sum is 49.

The square root of 145828489 is about 12075.9467123700. The cubic root of 145828489 is about 526.3574714447.

The spelling of 145828489 in words is "one hundred forty-five million, eight hundred twenty-eight thousand, four hundred eighty-nine".