19449198 has 96 divisors (see below), whose sum is σ = 48016800. Its totient is φ = 5660928.

The previous prime is 19449193. The next prime is 19449203. The reversal of 19449198 is 89194491.

19449198 is a `hidden beast` number, since 19 + 449 + 198 = 666.

It is an interprime number because it is at equal distance from previous prime (19449193) and next prime (19449203).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19449193) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 366940 + ... + 366992.

It is an arithmetic number, because the mean of its divisors is an integer number (500175).

Almost surely, 2^19449198 is an apocalyptic number.

19449198 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 19449198, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24008400).

19449198 is an abundant number, since it is smaller than the sum of its proper divisors (28567602).

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

19449198 is a wasteful number, since it uses less digits than its factorization.

19449198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146 (or 143 counting only the distinct ones).

The product of its digits is 93312, while the sum is 45.

The square root of 19449198 is about 4410.1244880389. The cubic root of 19449198 is about 268.9266854740.

The spelling of 19449198 in words is "nineteen million, four hundred forty-nine thousand, one hundred ninety-eight".