1144155219 has 8 divisors (see below), whose sum is σ = 1532202960. Its totient is φ = 759438816.

The previous prime is 1144155203. The next prime is 1144155227. The reversal of 1144155219 is 9125514411.

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

It is not a de Polignac number, because 1144155219 - 2⁴ = 1144155203 is a prime.

It is a super-2 number, since 2×1144155219² = 2618182330329875922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1144155219.

It is not an unprimeable number, because it can be changed into a prime (1144155239) 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, 832032 + ... + 833405.

It is an arithmetic number, because the mean of its divisors is an integer number (191525370).

Almost surely, 2^1144155219 is an apocalyptic number.

1144155219 is a deficient number, since it is larger than the sum of its proper divisors (388047741).

1144155219 is a wasteful number, since it uses less digits than its factorization.

1144155219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1665669.

The product of its digits is 7200, while the sum is 33.

The square root of 1144155219 is about 33825.3635457182. The cubic root of 1144155219 is about 1045.9116054975.

The spelling of 1144155219 in words is "one billion, one hundred forty-four million, one hundred fifty-five thousand, two hundred nineteen".