1148125891589 has 4 divisors (see below), whose sum is σ = 1148675499180. Its totient is φ = 1147576284000.

The previous prime is 1148125891553. The next prime is 1148125891603. The reversal of 1148125891589 is 9851985218411.

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 828205563364 + 319920328225 = 910058^2 + 565615^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1148125891589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1148125890589) 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, 274800662 + ... + 274804839.

It is an arithmetic number, because the mean of its divisors is an integer number (287168874795).

Almost surely, 2^{1148125891589} is an apocalyptic number.

It is an amenable number.

1148125891589 is a deficient number, since it is larger than the sum of its proper divisors (549607591).

1148125891589 is an equidigital number, since it uses as much as digits as its factorization.

1148125891589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549607590.

The product of its digits is 8294400, while the sum is 62.

The spelling of 1148125891589 in words is "one trillion, one hundred forty-eight billion, one hundred twenty-five million, eight hundred ninety-one thousand, five hundred eighty-nine".