244746557989 has 2 divisors, whose sum is σ = 244746557990. Its totient is φ = 244746557988.

The previous prime is 244746557987. The next prime is 244746558109. The reversal of 244746557989 is 989755647442.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 192462077025 + 52284480964 = 438705^2 + 228658^2 .

It is a cyclic number.

It is not a de Polignac number, because 244746557989 - 2¹ = 244746557987 is a prime.

Together with 244746557987, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (244746557983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122373278994 + 122373278995.

It is an arithmetic number, because the mean of its divisors is an integer number (122373278995).

Almost surely, 2^244746557989 is an apocalyptic number.

It is an amenable number.

244746557989 is a deficient number, since it is larger than the sum of its proper divisors (1).

244746557989 is an equidigital number, since it uses as much as digits as its factorization.

244746557989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 609638400, while the sum is 70.

The spelling of 244746557989 in words is "two hundred forty-four billion, seven hundred forty-six million, five hundred fifty-seven thousand, nine hundred eighty-nine".