16818858143 has 2 divisors, whose sum is σ = 16818858144. Its totient is φ = 16818858142.

The previous prime is 16818858139. The next prime is 16818858179. The reversal of 16818858143 is 34185881861.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16818858143 - 2² = 16818858139 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16818858193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8409429071 + 8409429072.

It is an arithmetic number, because the mean of its divisors is an integer number (8409429072).

Almost surely, 2^16818858143 is an apocalyptic number.

16818858143 is a deficient number, since it is larger than the sum of its proper divisors (1).

16818858143 is an equidigital number, since it uses as much as digits as its factorization.

16818858143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1474560, while the sum is 53.

The spelling of 16818858143 in words is "sixteen billion, eight hundred eighteen million, eight hundred fifty-eight thousand, one hundred forty-three".