158432213 has 2 divisors, whose sum is σ = 158432214. Its totient is φ = 158432212.

The previous prime is 158432207. The next prime is 158432221. The reversal of 158432213 is 312234851.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81396484 + 77035729 = 9022^2 + 8777^2 .

It is a cyclic number.

It is not a de Polignac number, because 158432213 - 2⁸ = 158431957 is a prime.

It is a super-2 number, since 2×158432213² = 50201532232154738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151432213) 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, 79216106 + 79216107.

It is an arithmetic number, because the mean of its divisors is an integer number (79216107).

Almost surely, 2^158432213 is an apocalyptic number.

It is an amenable number.

158432213 is a deficient number, since it is larger than the sum of its proper divisors (1).

158432213 is an equidigital number, since it uses as much as digits as its factorization.

158432213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 29.

The square root of 158432213 is about 12586.9858584174. The cubic root of 158432213 is about 541.1045213823.

The spelling of 158432213 in words is "one hundred fifty-eight million, four hundred thirty-two thousand, two hundred thirteen".