18148307 has 2 divisors, whose sum is σ = 18148308. Its totient is φ = 18148306.

The previous prime is 18148303. The next prime is 18148309. The reversal of 18148307 is 70384181.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18148307 - 2² = 18148303 is a prime.

It is a super-2 number, since 2×18148307² = 658722093932498, which contains 22 as substring.

Together with 18148309, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18148303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9074153 + 9074154.

It is an arithmetic number, because the mean of its divisors is an integer number (9074154).

Almost surely, 2^18148307 is an apocalyptic number.

18148307 is a deficient number, since it is larger than the sum of its proper divisors (1).

18148307 is an equidigital number, since it uses as much as digits as its factorization.

18148307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 18148307 is about 4260.0829804125. The cubic root of 18148307 is about 262.7919388437.

The spelling of 18148307 in words is "eighteen million, one hundred forty-eight thousand, three hundred seven".