18752232689 has 8 divisors (see below), whose sum is σ = 19212894792. Its totient is φ = 18291727360.

The previous prime is 18752232643. The next prime is 18752232703. The reversal of 18752232689 is 98623225781.

It can be written as a sum of positive squares in 4 ways, for example, as 3322369600 + 15429863089 = 57640^2 + 124217^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18752232689 - 2¹⁶ = 18752167153 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18752232689.

It is not an unprimeable number, because it can be changed into a prime (18752232089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224477 + ... + 296469.

It is an arithmetic number, because the mean of its divisors is an integer number (2401611849).

Almost surely, 2^18752232689 is an apocalyptic number.

It is an amenable number.

18752232689 is a deficient number, since it is larger than the sum of its proper divisors (460662103).

18752232689 is an equidigital number, since it uses as much as digits as its factorization.

18752232689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78387.

The product of its digits is 2903040, while the sum is 53.

The spelling of 18752232689 in words is "eighteen billion, seven hundred fifty-two million, two hundred thirty-two thousand, six hundred eighty-nine".