1141581099 has 4 divisors (see below), whose sum is σ = 1522108136. Its totient is φ = 761054064.

The previous prime is 1141581079. The next prime is 1141581101. The reversal of 1141581099 is 9901851411.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-1141581099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1141581019) 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, 190263514 + ... + 190263519.

It is an arithmetic number, because the mean of its divisors is an integer number (380527034).

Almost surely, 2^1141581099 is an apocalyptic number.

1141581099 is a deficient number, since it is larger than the sum of its proper divisors (380527037).

1141581099 is an equidigital number, since it uses as much as digits as its factorization.

1141581099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380527036.

The product of its (nonzero) digits is 12960, while the sum is 39.

The square root of 1141581099 is about 33787.2919749423. The cubic root of 1141581099 is about 1045.1266526895.

The spelling of 1141581099 in words is "one billion, one hundred forty-one million, five hundred eighty-one thousand, ninety-nine".