244501493891 has 2 divisors, whose sum is σ = 244501493892. Its totient is φ = 244501493890.

The previous prime is 244501493881. The next prime is 244501493897. The reversal of 244501493891 is 198394105442.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 244501493891 - 2¹⁸ = 244501231747 is a prime.

It is not a weakly prime, because it can be changed into another prime (244501493897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122250746945 + 122250746946.

It is an arithmetic number, because the mean of its divisors is an integer number (122250746946).

Almost surely, 2^244501493891 is an apocalyptic number.

244501493891 is a deficient number, since it is larger than the sum of its proper divisors (1).

244501493891 is an equidigital number, since it uses as much as digits as its factorization.

244501493891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1244160, while the sum is 50.

The spelling of 244501493891 in words is "two hundred forty-four billion, five hundred one million, four hundred ninety-three thousand, eight hundred ninety-one".