160021489 has 2 divisors, whose sum is σ = 160021490. Its totient is φ = 160021488.

The previous prime is 160021457. The next prime is 160021517. The reversal of 160021489 is 984120061.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114661264 + 45360225 = 10708^2 + 6735^2 .

It is a cyclic number.

It is not a de Polignac number, because 160021489 - 2⁵ = 160021457 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 160021489.

It is not a weakly prime, because it can be changed into another prime (160021409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80010744 + 80010745.

It is an arithmetic number, because the mean of its divisors is an integer number (80010745).

Almost surely, 2^160021489 is an apocalyptic number.

It is an amenable number.

160021489 is a deficient number, since it is larger than the sum of its proper divisors (1).

160021489 is an equidigital number, since it uses as much as digits as its factorization.

160021489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 160021489 is about 12649.9600394626. The cubic root of 160021489 is about 542.9078264477.

The spelling of 160021489 in words is "one hundred sixty million, twenty-one thousand, four hundred eighty-nine".