1141881841 has 4 divisors (see below), whose sum is σ = 1157524132. Its totient is φ = 1126239552.

The previous prime is 1141881833. The next prime is 1141881847. The reversal of 1141881841 is 1481881411.

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 305515441 + 836366400 = 17479^2 + 28920^2 .

It is a cyclic number.

It is not a de Polignac number, because 1141881841 - 2³ = 1141881833 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 1141881841.

It is not an unprimeable number, because it can be changed into a prime (1141881847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7821036 + ... + 7821181.

It is an arithmetic number, because the mean of its divisors is an integer number (289381033).

Almost surely, 2^1141881841 is an apocalyptic number.

It is an amenable number.

1141881841 is a deficient number, since it is larger than the sum of its proper divisors (15642291).

1141881841 is an equidigital number, since it uses as much as digits as its factorization.

1141881841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15642290.

The product of its digits is 8192, while the sum is 37.

The square root of 1141881841 is about 33791.7422013130. The cubic root of 1141881841 is about 1045.2184218690.

The spelling of 1141881841 in words is "one billion, one hundred forty-one million, eight hundred eighty-one thousand, eight hundred forty-one".