158331346 has 4 divisors (see below), whose sum is σ = 237497022. Its totient is φ = 79165672.

The previous prime is 158331343. The next prime is 158331347. The reversal of 158331346 is 643133851.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 155975121 + 2356225 = 12489^2 + 1535^2 .

It is not an unprimeable number, because it can be changed into a prime (158331343) 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, 39582835 + ... + 39582838.

Almost surely, 2^158331346 is an apocalyptic number.

158331346 is a deficient number, since it is larger than the sum of its proper divisors (79165676).

158331346 is an equidigital number, since it uses as much as digits as its factorization.

158331346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79165675.

The product of its digits is 25920, while the sum is 34.

The square root of 158331346 is about 12582.9784232510. The cubic root of 158331346 is about 540.9896643178.

The spelling of 158331346 in words is "one hundred fifty-eight million, three hundred thirty-one thousand, three hundred forty-six".