18042463 has 2 divisors, whose sum is σ = 18042464. Its totient is φ = 18042462.

The previous prime is 18042361. The next prime is 18042469. The reversal of 18042463 is 36424081.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18042463 - 2⁹ = 18041951 is a prime.

It is a super-2 number, since 2×18042463² = 651060942212738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18042469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9021231 + 9021232.

It is an arithmetic number, because the mean of its divisors is an integer number (9021232).

Almost surely, 2^18042463 is an apocalyptic number.

18042463 is a deficient number, since it is larger than the sum of its proper divisors (1).

18042463 is an equidigital number, since it uses as much as digits as its factorization.

18042463 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 18042463 is about 4247.6420517741. The cubic root of 18042463 is about 262.2800600645.

The spelling of 18042463 in words is "eighteen million, forty-two thousand, four hundred sixty-three".