144143819 has 4 divisors (see below), whose sum is σ = 144762696. Its totient is φ = 143524944.

The previous prime is 144143807. The next prime is 144143827. The reversal of 144143819 is 918341441.

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

It is a cyclic number.

It is not a de Polignac number, because 144143819 - 2⁴ = 144143803 is a prime.

It is a super-2 number, since 2×144143819² = 41554881111809522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144143849) 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, 309089 + ... + 309554.

It is an arithmetic number, because the mean of its divisors is an integer number (36190674).

Almost surely, 2^144143819 is an apocalyptic number.

144143819 is a deficient number, since it is larger than the sum of its proper divisors (618877).

144143819 is an equidigital number, since it uses as much as digits as its factorization.

144143819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618876.

The product of its digits is 13824, while the sum is 35.

The square root of 144143819 is about 12005.9909628485. The cubic root of 144143819 is about 524.3227172661.

The spelling of 144143819 in words is "one hundred forty-four million, one hundred forty-three thousand, eight hundred nineteen".