158163458 has 4 divisors (see below), whose sum is σ = 237245190. Its totient is φ = 79081728.

The previous prime is 158163443. The next prime is 158163491. The reversal of 158163458 is 854361851.

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., 124835929 + 33327529 = 11173^2 + 5773^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39540863 + ... + 39540866.

Almost surely, 2^158163458 is an apocalyptic number.

158163458 is a deficient number, since it is larger than the sum of its proper divisors (79081732).

158163458 is an equidigital number, since it uses as much as digits as its factorization.

158163458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79081731.

The product of its digits is 115200, while the sum is 41.

The square root of 158163458 is about 12576.3054193193. The cubic root of 158163458 is about 540.7983823500.

The spelling of 158163458 in words is "one hundred fifty-eight million, one hundred sixty-three thousand, four hundred fifty-eight".