43038337949 has 2 divisors, whose sum is σ = 43038337950. Its totient is φ = 43038337948.

The previous prime is 43038337921. The next prime is 43038337957. The reversal of 43038337949 is 94973383034.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24244669849 + 18793668100 = 155707^2 + 137090^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43038337949 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43038337949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43038337649) 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, 21519168974 + 21519168975.

It is an arithmetic number, because the mean of its divisors is an integer number (21519168975).

Almost surely, 2^43038337949 is an apocalyptic number.

It is an amenable number.

43038337949 is a deficient number, since it is larger than the sum of its proper divisors (1).

43038337949 is an equidigital number, since it uses as much as digits as its factorization.

43038337949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5878656, while the sum is 53.

The spelling of 43038337949 in words is "forty-three billion, thirty-eight million, three hundred thirty-seven thousand, nine hundred forty-nine".