158197183 has 2 divisors, whose sum is σ = 158197184. Its totient is φ = 158197182.

The previous prime is 158197177. The next prime is 158197187. The reversal of 158197183 is 381791851.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 158197183 - 2¹³ = 158188991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (158197187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79098591 + 79098592.

It is an arithmetic number, because the mean of its divisors is an integer number (79098592).

Almost surely, 2^158197183 is an apocalyptic number.

158197183 is a deficient number, since it is larger than the sum of its proper divisors (1).

158197183 is an equidigital number, since it uses as much as digits as its factorization.

158197183 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 43.

The square root of 158197183 is about 12577.6461629353. The cubic root of 158197183 is about 540.8368175434.

The spelling of 158197183 in words is "one hundred fifty-eight million, one hundred ninety-seven thousand, one hundred eighty-three".