144614381 has 2 divisors, whose sum is σ = 144614382. Its totient is φ = 144614380.

The previous prime is 144614299. The next prime is 144614383. The reversal of 144614381 is 183416441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135256900 + 9357481 = 11630^2 + 3059^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144614381 is a prime.

It is a super-2 number, since 2×144614381² = 41826638384026322, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 144614383, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144614383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72307190 + 72307191.

It is an arithmetic number, because the mean of its divisors is an integer number (72307191).

Almost surely, 2^144614381 is an apocalyptic number.

It is an amenable number.

144614381 is a deficient number, since it is larger than the sum of its proper divisors (1).

144614381 is an equidigital number, since it uses as much as digits as its factorization.

144614381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 32.

The square root of 144614381 is about 12025.5719614495. The cubic root of 144614381 is about 524.8926534870.

The spelling of 144614381 in words is "one hundred forty-four million, six hundred fourteen thousand, three hundred eighty-one".