19498449 has 4 divisors (see below), whose sum is σ = 25997936. Its totient is φ = 12998964.

The previous prime is 19498429. The next prime is 19498459. The reversal of 19498449 is 94489491.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 19498449 - 2¹¹ = 19496401 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19498398 and 19498407.

It is not an unprimeable number, because it can be changed into a prime (19498429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3249739 + ... + 3249744.

It is an arithmetic number, because the mean of its divisors is an integer number (6499484).

Almost surely, 2^19498449 is an apocalyptic number.

It is an amenable number.

19498449 is a deficient number, since it is larger than the sum of its proper divisors (6499487).

19498449 is an equidigital number, since it uses as much as digits as its factorization.

19498449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6499486.

The product of its digits is 373248, while the sum is 48.

The square root of 19498449 is about 4415.7048135037. The cubic root of 19498449 is about 269.1534942077.

The spelling of 19498449 in words is "nineteen million, four hundred ninety-eight thousand, four hundred forty-nine".