158191768 has 16 divisors (see below), whose sum is σ = 338982480. Its totient is φ = 67796448.

The previous prime is 158191753. The next prime is 158191799. The reversal of 158191768 is 867191851.

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, 1412371 + ... + 1412482.

It is an arithmetic number, because the mean of its divisors is an integer number (21186405).

Almost surely, 2^158191768 is an apocalyptic number.

It is an amenable number.

158191768 is an abundant number, since it is smaller than the sum of its proper divisors (180790712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

158191768 is a wasteful number, since it uses less digits than its factorization.

158191768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2824866 (or 2824862 counting only the distinct ones).

The product of its digits is 120960, while the sum is 46.

The square root of 158191768 is about 12577.4308982399. The cubic root of 158191768 is about 540.8306466270.

The spelling of 158191768 in words is "one hundred fifty-eight million, one hundred ninety-one thousand, seven hundred sixty-eight".