944418362009 has 2 divisors, whose sum is σ = 944418362010. Its totient is φ = 944418362008.

The previous prime is 944418361961. The next prime is 944418362011. The reversal of 944418362009 is 900263814449.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 584226336409 + 360192025600 = 764347^2 + 600160^2 .

It is a cyclic number.

It is not a de Polignac number, because 944418362009 - 2³² = 940123394713 is a prime.

Together with 944418362011, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (944418362509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 472209181004 + 472209181005.

It is an arithmetic number, because the mean of its divisors is an integer number (472209181005).

Almost surely, 2^944418362009 is an apocalyptic number.

It is an amenable number.

944418362009 is a deficient number, since it is larger than the sum of its proper divisors (1).

944418362009 is an equidigital number, since it uses as much as digits as its factorization.

944418362009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1492992, while the sum is 50.

The spelling of 944418362009 in words is "nine hundred forty-four billion, four hundred eighteen million, three hundred sixty-two thousand, nine".