1230664089 has 4 divisors (see below), whose sum is σ = 1640885456. Its totient is φ = 820442724.

The previous prime is 1230664049. The next prime is 1230664103. The reversal of 1230664089 is 9804660321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9804660321 = 3 ⋅3268220107.

It is not a de Polignac number, because 1230664089 - 2⁷ = 1230663961 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1230664049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205110679 + ... + 205110684.

It is an arithmetic number, because the mean of its divisors is an integer number (410221364).

Almost surely, 2^1230664089 is an apocalyptic number.

It is an amenable number.

1230664089 is a deficient number, since it is larger than the sum of its proper divisors (410221367).

1230664089 is an equidigital number, since it uses as much as digits as its factorization.

1230664089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410221366.

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 1230664089 is about 35080.8222395086. The cubic root of 1230664089 is about 1071.6340621963.

The spelling of 1230664089 in words is "one billion, two hundred thirty million, six hundred sixty-four thousand, eighty-nine".