1994943283 has 2 divisors, whose sum is σ = 1994943284. Its totient is φ = 1994943282.

The previous prime is 1994943259. The next prime is 1994943287. The reversal of 1994943283 is 3823494991.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1994943283 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1994943283.

It is not a weakly prime, because it can be changed into another prime (1994943287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 997471641 + 997471642.

It is an arithmetic number, because the mean of its divisors is an integer number (997471642).

Almost surely, 2^1994943283 is an apocalyptic number.

1994943283 is a deficient number, since it is larger than the sum of its proper divisors (1).

1994943283 is an equidigital number, since it uses as much as digits as its factorization.

1994943283 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1679616, while the sum is 52.

The square root of 1994943283 is about 44664.7879542711. The cubic root of 1994943283 is about 1258.8583096963.

The spelling of 1994943283 in words is "one billion, nine hundred ninety-four million, nine hundred forty-three thousand, two hundred eighty-three".