998736143 has 2 divisors, whose sum is σ = 998736144. Its totient is φ = 998736142.

The previous prime is 998736139. The next prime is 998736161. The reversal of 998736143 is 341637899.

998736143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 998736143 - 2² = 998736139 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 998736091 and 998736100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998736113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499368071 + 499368072.

It is an arithmetic number, because the mean of its divisors is an integer number (499368072).

Almost surely, 2^998736143 is an apocalyptic number.

998736143 is a deficient number, since it is larger than the sum of its proper divisors (1).

998736143 is an equidigital number, since it uses as much as digits as its factorization.

998736143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 979776, while the sum is 50.

The square root of 998736143 is about 31602.7869498878. The cubic root of 998736143 is about 999.5785367270.

The spelling of 998736143 in words is "nine hundred ninety-eight million, seven hundred thirty-six thousand, one hundred forty-three".