18473963 has 2 divisors, whose sum is σ = 18473964. Its totient is φ = 18473962.

The previous prime is 18473887. The next prime is 18473969. The reversal of 18473963 is 36937481.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18473963 - 2¹⁸ = 18211819 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18473963.

It is not a weakly prime, because it can be changed into another prime (18473969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9236981 + 9236982.

It is an arithmetic number, because the mean of its divisors is an integer number (9236982).

Almost surely, 2^18473963 is an apocalyptic number.

18473963 is a deficient number, since it is larger than the sum of its proper divisors (1).

18473963 is an equidigital number, since it uses as much as digits as its factorization.

18473963 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 41.

The square root of 18473963 is about 4298.1348280388. The cubic root of 18473963 is about 264.3544891658.

It can be divided in two parts, 184 and 73963, that added together give a palindrome (74147).

The spelling of 18473963 in words is "eighteen million, four hundred seventy-three thousand, nine hundred sixty-three".