19914198 has 16 divisors (see below), whose sum is σ = 40201920. Its totient is φ = 6575816.

The previous prime is 19914187. The next prime is 19914217. The reversal of 19914198 is 89141991.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 14868 + ... + 16151.

It is an arithmetic number, because the mean of its divisors is an integer number (2512620).

Almost surely, 2^19914198 is an apocalyptic number.

19914198 is an abundant number, since it is smaller than the sum of its proper divisors (20287722).

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

19914198 is a wasteful number, since it uses less digits than its factorization.

19914198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31131.

The product of its digits is 23328, while the sum is 42.

The square root of 19914198 is about 4462.5326889559. The cubic root of 19914198 is about 271.0530344683.

It can be divided in two parts, 1 and 9914198, that added together give a palindrome (9914199).

The spelling of 19914198 in words is "nineteen million, nine hundred fourteen thousand, one hundred ninety-eight".