158198636 has 12 divisors (see below), whose sum is σ = 291418680. Its totient is φ = 74936160.

The previous prime is 158198633. The next prime is 158198659. The reversal of 158198636 is 636891851.

It is not an unprimeable number, because it can be changed into a prime (158198633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1040705 + ... + 1040856.

It is an arithmetic number, because the mean of its divisors is an integer number (24284890).

Almost surely, 2^158198636 is an apocalyptic number.

It is an amenable number.

158198636 is a deficient number, since it is larger than the sum of its proper divisors (133220044).

158198636 is a wasteful number, since it uses less digits than its factorization.

158198636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2081584 (or 2081582 counting only the distinct ones).

The product of its digits is 311040, while the sum is 47.

The square root of 158198636 is about 12577.7039240078. The cubic root of 158198636 is about 540.8384733535.

The spelling of 158198636 in words is "one hundred fifty-eight million, one hundred ninety-eight thousand, six hundred thirty-six".