1241181589 has 4 divisors (see below), whose sum is σ = 1244422656. Its totient is φ = 1237940524.

The previous prime is 1241181587. The next prime is 1241181607. The reversal of 1241181589 is 9851811421.

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: 9851811421 = 23 ⋅428339627.

It is a cyclic number.

It is not a de Polignac number, because 1241181589 - 2¹ = 1241181587 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1241181581) 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 3 ways as a sum of consecutive naturals, for example, 1619959 + ... + 1620724.

It is an arithmetic number, because the mean of its divisors is an integer number (311105664).

Almost surely, 2^1241181589 is an apocalyptic number.

It is an amenable number.

1241181589 is a deficient number, since it is larger than the sum of its proper divisors (3241067).

1241181589 is an equidigital number, since it uses as much as digits as its factorization.

1241181589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3241066.

The product of its digits is 23040, while the sum is 40.

The square root of 1241181589 is about 35230.4071648342. The cubic root of 1241181589 is about 1074.6782059001.

The spelling of 1241181589 in words is "one billion, two hundred forty-one million, one hundred eighty-one thousand, five hundred eighty-nine".