18366071 has 2 divisors, whose sum is σ = 18366072. Its totient is φ = 18366070.

The previous prime is 18366059. The next prime is 18366091. The reversal of 18366071 is 17066381.

It is a weak prime.

It is an emirp because it is prime and its reverse (17066381) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18366071 - 2²² = 14171767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18366011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9183035 + 9183036.

It is an arithmetic number, because the mean of its divisors is an integer number (9183036).

Almost surely, 2^18366071 is an apocalyptic number.

18366071 is a deficient number, since it is larger than the sum of its proper divisors (1).

18366071 is an equidigital number, since it uses as much as digits as its factorization.

18366071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 18366071 is about 4285.5654236052. The cubic root of 18366071 is about 263.8388546338.

The spelling of 18366071 in words is "eighteen million, three hundred sixty-six thousand, seventy-one".