158870213 has 2 divisors, whose sum is σ = 158870214. Its totient is φ = 158870212.

The previous prime is 158870209. The next prime is 158870221. The reversal of 158870213 is 312078851.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80317444 + 78552769 = 8962^2 + 8863^2 .

It is a cyclic number.

It is not a de Polignac number, because 158870213 - 2² = 158870209 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (158870113) by changing a digit.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79435106 + 79435107.

It is an arithmetic number, because the mean of its divisors is an integer number (79435107).

Almost surely, 2^158870213 is an apocalyptic number.

It is an amenable number.

158870213 is a deficient number, since it is larger than the sum of its proper divisors (1).

158870213 is an equidigital number, since it uses as much as digits as its factorization.

158870213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 158870213 is about 12604.3727729705. The cubic root of 158870213 is about 541.6027064939.

The spelling of 158870213 in words is "one hundred fifty-eight million, eight hundred seventy thousand, two hundred thirteen".