1234563089 has 4 divisors (see below), whose sum is σ = 1277134260. Its totient is φ = 1191991920.

The previous prime is 1234563073. The next prime is 1234563091. The reversal of 1234563089 is 9803654321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 658179025 + 576384064 = 25655^2 + 24008^2 .

It is a cyclic number.

It is not a de Polignac number, because 1234563089 - 2⁴ = 1234563073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1234566089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21285542 + ... + 21285599.

It is an arithmetic number, because the mean of its divisors is an integer number (319283565).

Almost surely, 2^1234563089 is an apocalyptic number.

It is an amenable number.

1234563089 is a deficient number, since it is larger than the sum of its proper divisors (42571171).

1234563089 is an equidigital number, since it uses as much as digits as its factorization.

1234563089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42571170.

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 1234563089 is about 35136.3499669502. The cubic root of 1234563089 is about 1072.7645890449.

The spelling of 1234563089 in words is "one billion, two hundred thirty-four million, five hundred sixty-three thousand, eighty-nine".