1230320489 has 2 divisors, whose sum is σ = 1230320490. Its totient is φ = 1230320488.

The previous prime is 1230320473. The next prime is 1230320503. The reversal of 1230320489 is 9840230321.

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., 886848400 + 343472089 = 29780^2 + 18533^2 .

It is a cyclic number.

It is not a de Polignac number, because 1230320489 - 2⁴ = 1230320473 is a prime.

It is not a weakly prime, because it can be changed into another prime (1230320419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615160244 + 615160245.

It is an arithmetic number, because the mean of its divisors is an integer number (615160245).

Almost surely, 2^1230320489 is an apocalyptic number.

It is an amenable number.

1230320489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230320489 is an equidigital number, since it uses as much as digits as its factorization.

1230320489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 1230320489 is about 35075.9246349972. The cubic root of 1230320489 is about 1071.5343199133.

The spelling of 1230320489 in words is "one billion, two hundred thirty million, three hundred twenty thousand, four hundred eighty-nine".