158978798 has 32 divisors (see below), whose sum is σ = 279376128. Its totient is φ = 67043200.

The previous prime is 158978779. The next prime is 158978821. The reversal of 158978798 is 897879851.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 158978798.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 23561 + ... + 29547.

It is an arithmetic number, because the mean of its divisors is an integer number (8730504).

Almost surely, 2^158978798 is an apocalyptic number.

158978798 is a deficient number, since it is larger than the sum of its proper divisors (120397330).

158978798 is a wasteful number, since it uses less digits than its factorization.

158978798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6088.

The product of its digits is 10160640, while the sum is 62.

The square root of 158978798 is about 12608.6794709042. The cubic root of 158978798 is about 541.7260703713.

The spelling of 158978798 in words is "one hundred fifty-eight million, nine hundred seventy-eight thousand, seven hundred ninety-eight".