18174061 has 2 divisors, whose sum is σ = 18174062. Its totient is φ = 18174060.

The previous prime is 18174059. The next prime is 18174103. The reversal of 18174061 is 16047181.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16402500 + 1771561 = 4050^2 + 1331^2 .

It is a cyclic number.

It is not a de Polignac number, because 18174061 - 2¹ = 18174059 is a prime.

Together with 18174059, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18174001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9087030 + 9087031.

It is an arithmetic number, because the mean of its divisors is an integer number (9087031).

Almost surely, 2^18174061 is an apocalyptic number.

It is an amenable number.

18174061 is a deficient number, since it is larger than the sum of its proper divisors (1).

18174061 is an equidigital number, since it uses as much as digits as its factorization.

18174061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 18174061 is about 4263.1046198751. The cubic root of 18174061 is about 262.9161881687.

The spelling of 18174061 in words is "eighteen million, one hundred seventy-four thousand, sixty-one".