18106351 has 2 divisors, whose sum is σ = 18106352. Its totient is φ = 18106350.

The previous prime is 18106321. The next prime is 18106423. The reversal of 18106351 is 15360181.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18106351 - 2⁷ = 18106223 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18106301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9053175 + 9053176.

It is an arithmetic number, because the mean of its divisors is an integer number (9053176).

Almost surely, 2^18106351 is an apocalyptic number.

18106351 is a deficient number, since it is larger than the sum of its proper divisors (1).

18106351 is an equidigital number, since it uses as much as digits as its factorization.

18106351 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 18106351 is about 4255.1558138334. The cubic root of 18106351 is about 262.5892715266.

The spelling of 18106351 in words is "eighteen million, one hundred six thousand, three hundred fifty-one".