1144987171 has 4 divisors (see below), whose sum is σ = 1149442632. Its totient is φ = 1140531712.

The previous prime is 1144987159. The next prime is 1144987183. The reversal of 1144987171 is 1717894411.

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

It is an interprime number because it is at equal distance from previous prime (1144987159) and next prime (1144987183).

It is a cyclic number.

It is not a de Polignac number, because 1144987171 - 2⁹ = 1144986659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1144987271) 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, 2227345 + ... + 2227858.

It is an arithmetic number, because the mean of its divisors is an integer number (287360658).

Almost surely, 2^1144987171 is an apocalyptic number.

1144987171 is a deficient number, since it is larger than the sum of its proper divisors (4455461).

1144987171 is an equidigital number, since it uses as much as digits as its factorization.

1144987171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4455460.

The product of its digits is 56448, while the sum is 43.

The square root of 1144987171 is about 33837.6590650122. The cubic root of 1144987171 is about 1046.1650493830.

The spelling of 1144987171 in words is "one billion, one hundred forty-four million, nine hundred eighty-seven thousand, one hundred seventy-one".