244645013 has 2 divisors, whose sum is σ = 244645014. Its totient is φ = 244645012.

The previous prime is 244644971. The next prime is 244645039. The reversal of 244645013 is 310546442.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 244547044 + 97969 = 15638^2 + 313^2 .

It is a cyclic number.

It is not a de Polignac number, because 244645013 - 2¹² = 244640917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (244645213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122322506 + 122322507.

It is an arithmetic number, because the mean of its divisors is an integer number (122322507).

Almost surely, 2^244645013 is an apocalyptic number.

It is an amenable number.

244645013 is a deficient number, since it is larger than the sum of its proper divisors (1).

244645013 is an equidigital number, since it uses as much as digits as its factorization.

244645013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 244645013 is about 15641.1320881834. The cubic root of 244645013 is about 625.4301150271.

The spelling of 244645013 in words is "two hundred forty-four million, six hundred forty-five thousand, thirteen".