158166499 has 2 divisors, whose sum is σ = 158166500. Its totient is φ = 158166498.

The previous prime is 158166497. The next prime is 158166509. The reversal of 158166499 is 994661851.

It is a weak prime.

It is an emirp because it is prime and its reverse (994661851) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 158166499 - 2¹ = 158166497 is a prime.

Together with 158166497, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (158166497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79083249 + 79083250.

It is an arithmetic number, because the mean of its divisors is an integer number (79083250).

Almost surely, 2^158166499 is an apocalyptic number.

158166499 is a deficient number, since it is larger than the sum of its proper divisors (1).

158166499 is an equidigital number, since it uses as much as digits as its factorization.

158166499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 49.

The square root of 158166499 is about 12576.4263207002. The cubic root of 158166499 is about 540.8018482946.

The spelling of 158166499 in words is "one hundred fifty-eight million, one hundred sixty-six thousand, four hundred ninety-nine".