999982234187 has 2 divisors, whose sum is σ = 999982234188. Its totient is φ = 999982234186.

The previous prime is 999982234183. The next prime is 999982234201. The reversal of 999982234187 is 781432289999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 999982234187 - 2² = 999982234183 is a prime.

It is a super-2 number, since 2×999982234187² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 999982234187.

It is not a weakly prime, because it can be changed into another prime (999982234183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499991117093 + 499991117094.

It is an arithmetic number, because the mean of its divisors is an integer number (499991117094).

Almost surely, 2^999982234187 is an apocalyptic number.

999982234187 is a deficient number, since it is larger than the sum of its proper divisors (1).

999982234187 is an equidigital number, since it uses as much as digits as its factorization.

999982234187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141087744, while the sum is 71.

The spelling of 999982234187 in words is "nine hundred ninety-nine billion, nine hundred eighty-two million, two hundred thirty-four thousand, one hundred eighty-seven".