158159198 has 4 divisors (see below), whose sum is σ = 237238800. Its totient is φ = 79079598.

The previous prime is 158159191. The next prime is 158159219. The reversal of 158159198 is 891951851.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158159191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39539798 + ... + 39539801.

It is an arithmetic number, because the mean of its divisors is an integer number (59309700).

Almost surely, 2^158159198 is an apocalyptic number.

158159198 is a deficient number, since it is larger than the sum of its proper divisors (79079602).

158159198 is an equidigital number, since it uses as much as digits as its factorization.

158159198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79079601.

The product of its digits is 129600, while the sum is 47.

The square root of 158159198 is about 12576.1360520631. The cubic root of 158159198 is about 540.7935269896.

The spelling of 158159198 in words is "one hundred fifty-eight million, one hundred fifty-nine thousand, one hundred ninety-eight".