18063907 has 2 divisors, whose sum is σ = 18063908. Its totient is φ = 18063906.

The previous prime is 18063887. The next prime is 18063919. The reversal of 18063907 is 70936081.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18063907 - 2¹¹ = 18061859 is a prime.

It is a super-2 number, since 2×18063907² = 652609472209298, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18063967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9031953 + 9031954.

It is an arithmetic number, because the mean of its divisors is an integer number (9031954).

Almost surely, 2^18063907 is an apocalyptic number.

18063907 is a deficient number, since it is larger than the sum of its proper divisors (1).

18063907 is an equidigital number, since it uses as much as digits as its factorization.

18063907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 18063907 is about 4250.1655261884. The cubic root of 18063907 is about 262.3839281237.

Adding to 18063907 its reverse (70936081), we get a palindrome (88999988).

The spelling of 18063907 in words is "eighteen million, sixty-three thousand, nine hundred seven".