19199998 has 8 divisors (see below), whose sum is σ = 28831320. Its totient is φ = 9589560.

The previous prime is 19199981. The next prime is 19200007. The reversal of 19199998 is 89999191.

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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2673 + ... + 6748.

It is an arithmetic number, because the mean of its divisors is an integer number (3603915).

Almost surely, 2^19199998 is an apocalyptic number.

19199998 is a deficient number, since it is larger than the sum of its proper divisors (9631322).

19199998 is a wasteful number, since it uses less digits than its factorization.

19199998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10442.

The product of its digits is 472392, while the sum is 55.

The square root of 19199998 is about 4381.7802318236. The cubic root of 19199998 is about 267.7731707352.

The spelling of 19199998 in words is "nineteen million, one hundred ninety-nine thousand, nine hundred ninety-eight".