158861798 has 8 divisors (see below), whose sum is σ = 244104840. Its totient is φ = 77493520.

The previous prime is 158861779. The next prime is 158861809. The reversal of 158861798 is 897168851.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 968588 + ... + 968751.

It is an arithmetic number, because the mean of its divisors is an integer number (30513105).

Almost surely, 2^158861798 is an apocalyptic number.

158861798 is a deficient number, since it is larger than the sum of its proper divisors (85243042).

158861798 is a wasteful number, since it uses less digits than its factorization.

158861798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1937382.

The product of its digits is 967680, while the sum is 53.

The square root of 158861798 is about 12604.0389558268. The cubic root of 158861798 is about 541.5931438302.

The spelling of 158861798 in words is "one hundred fifty-eight million, eight hundred sixty-one thousand, seven hundred ninety-eight".