158163979 has 2 divisors, whose sum is σ = 158163980. Its totient is φ = 158163978.

The previous prime is 158163959. The next prime is 158163983. The reversal of 158163979 is 979361851.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 158163979 - 2⁷ = 158163851 is a prime.

It is a super-2 number, since 2×158163979² = 50031688506224882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (158163919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79081989 + 79081990.

It is an arithmetic number, because the mean of its divisors is an integer number (79081990).

Almost surely, 2^158163979 is an apocalyptic number.

158163979 is a deficient number, since it is larger than the sum of its proper divisors (1).

158163979 is an equidigital number, since it uses as much as digits as its factorization.

158163979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 408240, while the sum is 49.

The square root of 158163979 is about 12576.3261328577. The cubic root of 158163979 is about 540.7989761569.

The spelling of 158163979 in words is "one hundred fifty-eight million, one hundred sixty-three thousand, nine hundred seventy-nine".