998192101 has 2 divisors, whose sum is σ = 998192102. Its totient is φ = 998192100.

The previous prime is 998192099. The next prime is 998192123. The reversal of 998192101 is 101291899.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 715616001 + 282576100 = 26751^2 + 16810^2 .

It is a cyclic number.

It is not a de Polignac number, because 998192101 - 2¹ = 998192099 is a prime.

Together with 998192099, 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 (998192161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499096050 + 499096051.

It is an arithmetic number, because the mean of its divisors is an integer number (499096051).

Almost surely, 2^998192101 is an apocalyptic number.

It is an amenable number.

998192101 is a deficient number, since it is larger than the sum of its proper divisors (1).

998192101 is an equidigital number, since it uses as much as digits as its factorization.

998192101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 40.

The square root of 998192101 is about 31594.1782770181. The cubic root of 998192101 is about 999.3970034683.

The spelling of 998192101 in words is "nine hundred ninety-eight million, one hundred ninety-two thousand, one hundred one".