18263741 has 2 divisors, whose sum is σ = 18263742. Its totient is φ = 18263740.

The previous prime is 18263719. The next prime is 18263753. The reversal of 18263741 is 14736281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18028516 + 235225 = 4246^2 + 485^2 .

It is a cyclic number.

It is not a de Polignac number, because 18263741 - 2⁶ = 18263677 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18263698 and 18263707.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18263701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9131870 + 9131871.

It is an arithmetic number, because the mean of its divisors is an integer number (9131871).

Almost surely, 2^18263741 is an apocalyptic number.

It is an amenable number.

18263741 is a deficient number, since it is larger than the sum of its proper divisors (1).

18263741 is an equidigital number, since it uses as much as digits as its factorization.

18263741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 32.

The square root of 18263741 is about 4273.6098324484. The cubic root of 18263741 is about 263.3479325702.

The spelling of 18263741 in words is "eighteen million, two hundred sixty-three thousand, seven hundred forty-one".