144930913 has 2 divisors, whose sum is σ = 144930914. Its totient is φ = 144930912.

The previous prime is 144930911. The next prime is 144930943. The reversal of 144930913 is 319039441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136819809 + 8111104 = 11697^2 + 2848^2 .

It is a cyclic number.

It is not a de Polignac number, because 144930913 - 2¹ = 144930911 is a prime.

Together with 144930911, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (144930911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72465456 + 72465457.

It is an arithmetic number, because the mean of its divisors is an integer number (72465457).

Almost surely, 2^144930913 is an apocalyptic number.

It is an amenable number.

144930913 is a deficient number, since it is larger than the sum of its proper divisors (1).

144930913 is an equidigital number, since it uses as much as digits as its factorization.

144930913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 144930913 is about 12038.7255554731. The cubic root of 144930913 is about 525.2753361492.

The spelling of 144930913 in words is "one hundred forty-four million, nine hundred thirty thousand, nine hundred thirteen".