18283943 has 2 divisors, whose sum is σ = 18283944. Its totient is φ = 18283942.

The previous prime is 18283933. The next prime is 18283973. The reversal of 18283943 is 34938281.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18283943 - 2⁴ = 18283927 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18283897 and 18283906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18283913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9141971 + 9141972.

It is an arithmetic number, because the mean of its divisors is an integer number (9141972).

Almost surely, 2^18283943 is an apocalyptic number.

18283943 is a deficient number, since it is larger than the sum of its proper divisors (1).

18283943 is an equidigital number, since it uses as much as digits as its factorization.

18283943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 38.

The square root of 18283943 is about 4275.9727548243. The cubic root of 18283943 is about 263.4449954620. Note that the first 3 decimals are identical.

The spelling of 18283943 in words is "eighteen million, two hundred eighty-three thousand, nine hundred forty-three".