1144186409 has 8 divisors (see below), whose sum is σ = 1213018368. Its totient is φ = 1077349680.

The previous prime is 1144186391. The next prime is 1144186427. The reversal of 1144186409 is 9046814411.

It is an interprime number because it is at equal distance from previous prime (1144186391) and next prime (1144186427).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1144186409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1144186429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 497627 + ... + 499920.

It is an arithmetic number, because the mean of its divisors is an integer number (151627296).

Almost surely, 2^1144186409 is an apocalyptic number.

It is an amenable number.

1144186409 is a deficient number, since it is larger than the sum of its proper divisors (68831959).

1144186409 is an equidigital number, since it uses as much as digits as its factorization.

1144186409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997615.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 1144186409 is about 33825.8245871405. The cubic root of 1144186409 is about 1045.9211093615.

The spelling of 1144186409 in words is "one billion, one hundred forty-four million, one hundred eighty-six thousand, four hundred nine".