816162143 has 2 divisors, whose sum is σ = 816162144. Its totient is φ = 816162142.

The previous prime is 816162121. The next prime is 816162173. The reversal of 816162143 is 341261618.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 816162143 - 2¹² = 816158047 is a prime.

It is a super-2 number, since 2×816162143² = 1332241287332704898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (816162103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 408081071 + 408081072.

It is an arithmetic number, because the mean of its divisors is an integer number (408081072).

Almost surely, 2^816162143 is an apocalyptic number.

816162143 is a deficient number, since it is larger than the sum of its proper divisors (1).

816162143 is an equidigital number, since it uses as much as digits as its factorization.

816162143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 32.

The square root of 816162143 is about 28568.5516433718. The cubic root of 816162143 is about 934.5276358037.

The spelling of 816162143 in words is "eight hundred sixteen million, one hundred sixty-two thousand, one hundred forty-three".