144436637 has 2 divisors, whose sum is σ = 144436638. Its totient is φ = 144436636.

The previous prime is 144436631. The next prime is 144436639. The reversal of 144436637 is 736634441.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141943396 + 2493241 = 11914^2 + 1579^2 .

It is a cyclic number.

It is not a de Polignac number, because 144436637 - 2¹⁸ = 144174493 is a prime.

Together with 144436639, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 144436637.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144436631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72218318 + 72218319.

It is an arithmetic number, because the mean of its divisors is an integer number (72218319).

Almost surely, 2^144436637 is an apocalyptic number.

It is an amenable number.

144436637 is a deficient number, since it is larger than the sum of its proper divisors (1).

144436637 is an equidigital number, since it uses as much as digits as its factorization.

144436637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 38.

The square root of 144436637 is about 12018.1794378350. The cubic root of 144436637 is about 524.6775186608.

The spelling of 144436637 in words is "one hundred forty-four million, four hundred thirty-six thousand, six hundred thirty-seven".