18226627 has 2 divisors, whose sum is σ = 18226628. Its totient is φ = 18226626.

The previous prime is 18226583. The next prime is 18226639. The reversal of 18226627 is 72662281.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18226627 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18226592 and 18226601.

It is not a weakly prime, because it can be changed into another prime (18226687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9113313 + 9113314.

It is an arithmetic number, because the mean of its divisors is an integer number (9113314).

Almost surely, 2^18226627 is an apocalyptic number.

18226627 is a deficient number, since it is larger than the sum of its proper divisors (1).

18226627 is an equidigital number, since it uses as much as digits as its factorization.

18226627 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 34.

The square root of 18226627 is about 4269.2653934840. The cubic root of 18226627 is about 263.1694272792.

The spelling of 18226627 in words is "eighteen million, two hundred twenty-six thousand, six hundred twenty-seven".