194283281 has 2 divisors, whose sum is σ = 194283282. Its totient is φ = 194283280.

The previous prime is 194283269. The next prime is 194283373. The reversal of 194283281 is 182382491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 143017681 + 51265600 = 11959^2 + 7160^2 .

It is a cyclic number.

It is not a de Polignac number, because 194283281 - 2¹⁸ = 194021137 is a prime.

It is a super-2 number, since 2×194283281² = 75491986552249922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (194283211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97141640 + 97141641.

It is an arithmetic number, because the mean of its divisors is an integer number (97141641).

Almost surely, 2^194283281 is an apocalyptic number.

It is an amenable number.

194283281 is a deficient number, since it is larger than the sum of its proper divisors (1).

194283281 is an equidigital number, since it uses as much as digits as its factorization.

194283281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 38.

The square root of 194283281 is about 13938.5537628550. The cubic root of 194283281 is about 579.1776703555.

The spelling of 194283281 in words is "one hundred ninety-four million, two hundred eighty-three thousand, two hundred eighty-one".