158816146 has 4 divisors (see below), whose sum is σ = 238224222. Its totient is φ = 79408072.

The previous prime is 158816089. The next prime is 158816153. The reversal of 158816146 is 641618851.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 641618851 = 191 ⋅3359261.

It can be written as a sum of positive squares in only one way, i.e., 89510521 + 69305625 = 9461^2 + 8325^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 158816099 and 158816108.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39704035 + ... + 39704038.

Almost surely, 2^158816146 is an apocalyptic number.

158816146 is a deficient number, since it is larger than the sum of its proper divisors (79408076).

158816146 is an equidigital number, since it uses as much as digits as its factorization.

158816146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79408075.

The product of its digits is 46080, while the sum is 40.

The square root of 158816146 is about 12602.2278189215. The cubic root of 158816146 is about 541.5412597832.

The spelling of 158816146 in words is "one hundred fifty-eight million, eight hundred sixteen thousand, one hundred forty-six".