998546851 has 2 divisors, whose sum is σ = 998546852. Its totient is φ = 998546850.

The previous prime is 998546837. The next prime is 998546869. The reversal of 998546851 is 158645899.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 998546851 - 2¹¹ = 998544803 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 998546792 and 998546801.

It is not a weakly prime, because it can be changed into another prime (998546551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499273425 + 499273426.

It is an arithmetic number, because the mean of its divisors is an integer number (499273426).

Almost surely, 2^998546851 is an apocalyptic number.

998546851 is a deficient number, since it is larger than the sum of its proper divisors (1).

998546851 is an equidigital number, since it uses as much as digits as its factorization.

998546851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3110400, while the sum is 55.

The square root of 998546851 is about 31599.7919455176. The cubic root of 998546851 is about 999.5153821835.

The spelling of 998546851 in words is "nine hundred ninety-eight million, five hundred forty-six thousand, eight hundred fifty-one".