19198942 has 8 divisors (see below), whose sum is σ = 32912496. Its totient is φ = 8228112.

The previous prime is 19198939. The next prime is 19198943. The reversal of 19198942 is 24989191.

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 not an unprimeable number, because it can be changed into a prime (19198943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 685663 + ... + 685690.

It is an arithmetic number, because the mean of its divisors is an integer number (4114062).

Almost surely, 2^19198942 is an apocalyptic number.

19198942 is a deficient number, since it is larger than the sum of its proper divisors (13713554).

19198942 is a wasteful number, since it uses less digits than its factorization.

19198942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371362.

The product of its digits is 46656, while the sum is 43.

The square root of 19198942 is about 4381.6597311978. The cubic root of 19198942 is about 267.7682614699.

The spelling of 19198942 in words is "nineteen million, one hundred ninety-eight thousand, nine hundred forty-two".