158563478 has 4 divisors (see below), whose sum is σ = 237845220. Its totient is φ = 79281738.

The previous prime is 158563469. The next prime is 158563501. The reversal of 158563478 is 874365851.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 874365851 = 4567 ⋅191453.

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, 39640868 + ... + 39640871.

It is an arithmetic number, because the mean of its divisors is an integer number (59461305).

Almost surely, 2^158563478 is an apocalyptic number.

158563478 is a deficient number, since it is larger than the sum of its proper divisors (79281742).

158563478 is an equidigital number, since it uses as much as digits as its factorization.

158563478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79281741.

The product of its digits is 806400, while the sum is 47.

The square root of 158563478 is about 12592.1990930893. The cubic root of 158563478 is about 541.2539196149.

The spelling of 158563478 in words is "one hundred fifty-eight million, five hundred sixty-three thousand, four hundred seventy-eight".