19799158 has 8 divisors (see below), whose sum is σ = 29870928. Its totient is φ = 9842184.

The previous prime is 19799149. The next prime is 19799183. The reversal of 19799158 is 85199791.

It is a happy number.

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, 28266 + ... + 28957.

It is an arithmetic number, because the mean of its divisors is an integer number (3733866).

Almost surely, 2^19799158 is an apocalyptic number.

19799158 is a deficient number, since it is larger than the sum of its proper divisors (10071770).

19799158 is a wasteful number, since it uses less digits than its factorization.

19799158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57398.

The product of its digits is 204120, while the sum is 49.

The square root of 19799158 is about 4449.6244785375. The cubic root of 19799158 is about 270.5300880040.

The spelling of 19799158 in words is "nineteen million, seven hundred ninety-nine thousand, one hundred fifty-eight".