158145686 has 4 divisors (see below), whose sum is σ = 237218532. Its totient is φ = 79072842.

The previous prime is 158145649. The next prime is 158145707. The reversal of 158145686 is 686541851.

158145686 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 686541851 = 433 ⋅1585547.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39536420 + ... + 39536423.

It is an arithmetic number, because the mean of its divisors is an integer number (59304633).

Almost surely, 2^158145686 is an apocalyptic number.

158145686 is a deficient number, since it is larger than the sum of its proper divisors (79072846).

158145686 is an equidigital number, since it uses as much as digits as its factorization.

158145686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79072845.

The product of its digits is 230400, while the sum is 44.

The square root of 158145686 is about 12575.5988326600. The cubic root of 158145686 is about 540.7781260300.

The spelling of 158145686 in words is "one hundred fifty-eight million, one hundred forty-five thousand, six hundred eighty-six".