998846000491 has 2 divisors, whose sum is σ = 998846000492. Its totient is φ = 998846000490.

The previous prime is 998846000473. The next prime is 998846000497. The reversal of 998846000491 is 194000648899.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (194000648899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 998846000491 - 2⁵ = 998846000459 is a prime.

It is not a weakly prime, because it can be changed into another prime (998846000497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499423000245 + 499423000246.

It is an arithmetic number, because the mean of its divisors is an integer number (499423000246).

Almost surely, 2^998846000491 is an apocalyptic number.

998846000491 is a deficient number, since it is larger than the sum of its proper divisors (1).

998846000491 is an equidigital number, since it uses as much as digits as its factorization.

998846000491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4478976, while the sum is 58.

The spelling of 998846000491 in words is "nine hundred ninety-eight billion, eight hundred forty-six million, four hundred ninety-one", and thus it is an aban number.