994145543 has 2 divisors, whose sum is σ = 994145544. Its totient is φ = 994145542.

The previous prime is 994145519. The next prime is 994145557. The reversal of 994145543 is 345541499.

994145543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 994145543 - 2¹⁰ = 994144519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 994145494 and 994145503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (994145443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497072771 + 497072772.

It is an arithmetic number, because the mean of its divisors is an integer number (497072772).

Almost surely, 2^994145543 is an apocalyptic number.

994145543 is a deficient number, since it is larger than the sum of its proper divisors (1).

994145543 is an equidigital number, since it uses as much as digits as its factorization.

994145543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 388800, while the sum is 44.

The square root of 994145543 is about 31530.0736282045. The cubic root of 994145543 is about 998.0446936021.

The spelling of 994145543 in words is "nine hundred ninety-four million, one hundred forty-five thousand, five hundred forty-three".