144555919 has 2 divisors, whose sum is σ = 144555920. Its totient is φ = 144555918.

The previous prime is 144555911. The next prime is 144555941. The reversal of 144555919 is 919555441.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 144555919 - 2³ = 144555911 is a prime.

It is a super-2 number, since 2×144555919² = 41792827435869122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144555911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72277959 + 72277960.

It is an arithmetic number, because the mean of its divisors is an integer number (72277960).

Almost surely, 2^144555919 is an apocalyptic number.

144555919 is a deficient number, since it is larger than the sum of its proper divisors (1).

144555919 is an equidigital number, since it uses as much as digits as its factorization.

144555919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 162000, while the sum is 43.

The square root of 144555919 is about 12023.1409789622. The cubic root of 144555919 is about 524.8219126886.

The spelling of 144555919 in words is "one hundred forty-four million, five hundred fifty-five thousand, nine hundred nineteen".