1141149581 has 8 divisors (see below), whose sum is σ = 1340651424. Its totient is φ = 957607920.

The previous prime is 1141149571. The next prime is 1141149637. The reversal of 1141149581 is 1859411411.

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 1141149581 - 2³⁰ = 67407757 is a prime.

It is a super-2 number, since 2×1141149581² = 2604444732432951122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1141149571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3989891 + ... + 3990176.

It is an arithmetic number, because the mean of its divisors is an integer number (167581428).

Almost surely, 2^1141149581 is an apocalyptic number.

1141149581 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1141149581 is a deficient number, since it is larger than the sum of its proper divisors (199501843).

1141149581 is a wasteful number, since it uses less digits than its factorization.

1141149581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7980091.

The product of its digits is 5760, while the sum is 35.

The square root of 1141149581 is about 33780.9055680868. The cubic root of 1141149581 is about 1044.9949500302.

The spelling of 1141149581 in words is "one billion, one hundred forty-one million, one hundred forty-nine thousand, five hundred eighty-one".