144451919 has 2 divisors, whose sum is σ = 144451920. Its totient is φ = 144451918.

The previous prime is 144451913. The next prime is 144452027. The reversal of 144451919 is 919154441.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 144451919 - 2⁴ = 144451903 is a prime.

It is a super-2 number, since 2×144451919² = 41732713805565122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144451913) 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 as a sum of consecutive naturals, namely, 72225959 + 72225960.

It is an arithmetic number, because the mean of its divisors is an integer number (72225960).

Almost surely, 2^144451919 is an apocalyptic number.

144451919 is a deficient number, since it is larger than the sum of its proper divisors (1).

144451919 is an equidigital number, since it uses as much as digits as its factorization.

144451919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 38.

The square root of 144451919 is about 12018.8152078314. The cubic root of 144451919 is about 524.6960223665.

The spelling of 144451919 in words is "one hundred forty-four million, four hundred fifty-one thousand, nine hundred nineteen".