144643643 has 2 divisors, whose sum is σ = 144643644. Its totient is φ = 144643642.

The previous prime is 144643589. The next prime is 144643651. The reversal of 144643643 is 346346441.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 144643643 - 2⁶ = 144643579 is a prime.

It is a super-2 number, since 2×144643643² = 41843566920622898, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (144643673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72321821 + 72321822.

It is an arithmetic number, because the mean of its divisors is an integer number (72321822).

Almost surely, 2^144643643 is an apocalyptic number.

144643643 is a deficient number, since it is larger than the sum of its proper divisors (1).

144643643 is an equidigital number, since it uses as much as digits as its factorization.

144643643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 35.

The square root of 144643643 is about 12026.7885572168. The cubic root of 144643643 is about 524.9280542378.

The spelling of 144643643 in words is "one hundred forty-four million, six hundred forty-three thousand, six hundred forty-three".