1141840871 has 4 divisors (see below), whose sum is σ = 1150831872. Its totient is φ = 1132849872.

The previous prime is 1141840859. The next prime is 1141840901. The reversal of 1141840871 is 1780481411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1780481411 = 757 ⋅2352023.

It is a cyclic number.

It is not a de Polignac number, because 1141840871 - 2¹⁸ = 1141578727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1141840801) 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, 4495310 + ... + 4495563.

It is an arithmetic number, because the mean of its divisors is an integer number (287707968).

Almost surely, 2^1141840871 is an apocalyptic number.

1141840871 is a deficient number, since it is larger than the sum of its proper divisors (8991001).

1141840871 is an equidigital number, since it uses as much as digits as its factorization.

1141840871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8991000.

The product of its (nonzero) digits is 7168, while the sum is 35.

The square root of 1141840871 is about 33791.1359826804. The cubic root of 1141840871 is about 1045.2059211270.

The spelling of 1141840871 in words is "one billion, one hundred forty-one million, eight hundred forty thousand, eight hundred seventy-one".