1141807881 has 4 divisors (see below), whose sum is σ = 1522410512. Its totient is φ = 761205252.

The previous prime is 1141807867. The next prime is 1141807889. The reversal of 1141807881 is 1887081411.

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: 1887081411 = 3 ⋅629027137.

It is not a de Polignac number, because 1141807881 - 2²⁵ = 1108253449 is a prime.

It is a super-2 number, since 2×1141807881² = 2607450474227420322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1141807889) 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, 190301311 + ... + 190301316.

It is an arithmetic number, because the mean of its divisors is an integer number (380602628).

Almost surely, 2^1141807881 is an apocalyptic number.

It is an amenable number.

1141807881 is a deficient number, since it is larger than the sum of its proper divisors (380602631).

1141807881 is an equidigital number, since it uses as much as digits as its factorization.

1141807881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380602630.

The product of its (nonzero) digits is 14336, while the sum is 39.

The square root of 1141807881 is about 33790.6478333873. The cubic root of 1141807881 is about 1045.1958550205.

The spelling of 1141807881 in words is "one billion, one hundred forty-one million, eight hundred seven thousand, eight hundred eighty-one".