158219387 has 2 divisors, whose sum is σ = 158219388. Its totient is φ = 158219386.

The previous prime is 158219377. The next prime is 158219407. The reversal of 158219387 is 783912851.

It is a weak prime.

It is an emirp because it is prime and its reverse (783912851) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 158219387 - 2⁴ = 158219371 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (158219377) 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, 79109693 + 79109694.

It is an arithmetic number, because the mean of its divisors is an integer number (79109694).

Almost surely, 2^158219387 is an apocalyptic number.

158219387 is a deficient number, since it is larger than the sum of its proper divisors (1).

158219387 is an equidigital number, since it uses as much as digits as its factorization.

158219387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 44.

The square root of 158219387 is about 12578.5288090460. The cubic root of 158219387 is about 540.8621196773.

The spelling of 158219387 in words is "one hundred fifty-eight million, two hundred nineteen thousand, three hundred eighty-seven".