944168513 has 2 divisors, whose sum is σ = 944168514. Its totient is φ = 944168512.

The previous prime is 944168507. The next prime is 944168531. The reversal of 944168513 is 315861449.

944168513 = 21727² + 21728².

Together with next prime (944168531) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 472105984 + 472062529 = 21728^2 + 21727^2 .

It is a cyclic number.

It is not a de Polignac number, because 944168513 - 2⁴ = 944168497 is a prime.

It is not a weakly prime, because it can be changed into another prime (944168543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 472084256 + 472084257.

It is an arithmetic number, because the mean of its divisors is an integer number (472084257).

Almost surely, 2^944168513 is an apocalyptic number.

944168513 is the 21728-th centered square number.

It is an amenable number.

944168513 is a deficient number, since it is larger than the sum of its proper divisors (1).

944168513 is an equidigital number, since it uses as much as digits as its factorization.

944168513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 41.

The square root of 944168513 is about 30727.3251845975. The cubic root of 944168513 is about 981.0319938802.

The spelling of 944168513 in words is "nine hundred forty-four million, one hundred sixty-eight thousand, five hundred thirteen".