18063919 has 2 divisors, whose sum is σ = 18063920. Its totient is φ = 18063918.

The previous prime is 18063907. The next prime is 18063943. The reversal of 18063919 is 91936081.

It is a weak prime.

It is an emirp because it is prime and its reverse (91936081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18063919 - 2⁵ = 18063887 is a prime.

It is a super-2 number, since 2×18063919² = 652610339277122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18061919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9031959 + 9031960.

It is an arithmetic number, because the mean of its divisors is an integer number (9031960).

Almost surely, 2^18063919 is an apocalyptic number.

18063919 is a deficient number, since it is larger than the sum of its proper divisors (1).

18063919 is an equidigital number, since it uses as much as digits as its factorization.

18063919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 18063919 is about 4250.1669378979. The cubic root of 18063919 is about 262.3839862250.

The spelling of 18063919 in words is "eighteen million, sixty-three thousand, nine hundred nineteen".