194518481 has 2 divisors, whose sum is σ = 194518482. Its totient is φ = 194518480.

The previous prime is 194518469. The next prime is 194518483. The reversal of 194518481 is 184815491.

194518481 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 can be written as a sum of positive squares in only one way, i.e., 142086400 + 52432081 = 11920^2 + 7241^2 .

It is a cyclic number.

It is not a de Polignac number, because 194518481 - 2²⁶ = 127409617 is a prime.

It is a super-2 number, since 2×194518481² = 75674878901094722, which contains 22 as substring.

Together with 194518483, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (194518483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97259240 + 97259241.

It is an arithmetic number, because the mean of its divisors is an integer number (97259241).

Almost surely, 2^194518481 is an apocalyptic number.

It is an amenable number.

194518481 is a deficient number, since it is larger than the sum of its proper divisors (1).

194518481 is an equidigital number, since it uses as much as digits as its factorization.

194518481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46080, while the sum is 41.

The square root of 194518481 is about 13946.9882411939. The cubic root of 194518481 is about 579.4112942573.

The spelling of 194518481 in words is "one hundred ninety-four million, five hundred eighteen thousand, four hundred eighty-one".