18029863 has 2 divisors, whose sum is σ = 18029864. Its totient is φ = 18029862.

The previous prime is 18029849. The next prime is 18029881. The reversal of 18029863 is 36892081.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18029863 - 2⁹ = 18029351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18029833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9014931 + 9014932.

It is an arithmetic number, because the mean of its divisors is an integer number (9014932).

Almost surely, 2^18029863 is an apocalyptic number.

18029863 is a deficient number, since it is larger than the sum of its proper divisors (1).

18029863 is an equidigital number, since it uses as much as digits as its factorization.

18029863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 18029863 is about 4246.1586169148. The cubic root of 18029863 is about 262.2189911970.

The spelling of 18029863 in words is "eighteen million, twenty-nine thousand, eight hundred sixty-three".