18071741 has 2 divisors, whose sum is σ = 18071742. Its totient is φ = 18071740.

The previous prime is 18071699. The next prime is 18071743. The reversal of 18071741 is 14717081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11363641 + 6708100 = 3371^2 + 2590^2 .

It is an emirp because it is prime and its reverse (14717081) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18071741 is a prime.

Together with 18071743, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18071743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9035870 + 9035871.

It is an arithmetic number, because the mean of its divisors is an integer number (9035871).

Almost surely, 2^18071741 is an apocalyptic number.

It is an amenable number.

18071741 is a deficient number, since it is larger than the sum of its proper divisors (1).

18071741 is an equidigital number, since it uses as much as digits as its factorization.

18071741 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1568, while the sum is 29.

The square root of 18071741 is about 4251.0870374529. The cubic root of 18071741 is about 262.4218530794.

The spelling of 18071741 in words is "eighteen million, seventy-one thousand, seven hundred forty-one".