2194367543 has 2 divisors, whose sum is σ = 2194367544. Its totient is φ = 2194367542.

The previous prime is 2194367411. The next prime is 2194367557. The reversal of 2194367543 is 3457634912.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2194367543 - 2²² = 2190173239 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2194367494 and 2194367503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2194367573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1097183771 + 1097183772.

It is an arithmetic number, because the mean of its divisors is an integer number (1097183772).

Almost surely, 2^2194367543 is an apocalyptic number.

2194367543 is a deficient number, since it is larger than the sum of its proper divisors (1).

2194367543 is an equidigital number, since it uses as much as digits as its factorization.

2194367543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 44.

The square root of 2194367543 is about 46844.0769254769. The cubic root of 2194367543 is about 1299.4805701956.

The spelling of 2194367543 in words is "two billion, one hundred ninety-four million, three hundred sixty-seven thousand, five hundred forty-three".