19489245 has 8 divisors (see below), whose sum is σ = 31182816. Its totient is φ = 10394256.

The previous prime is 19489243. The next prime is 19489291. The reversal of 19489245 is 54298491.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19489245 - 2¹ = 19489243 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 19489197 and 19489206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19489243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 649627 + ... + 649656.

It is an arithmetic number, because the mean of its divisors is an integer number (3897852).

Almost surely, 2^19489245 is an apocalyptic number.

19489245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19489245 is a deficient number, since it is larger than the sum of its proper divisors (11693571).

19489245 is a wasteful number, since it uses less digits than its factorization.

19489245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1299291.

The product of its digits is 103680, while the sum is 42.

The square root of 19489245 is about 4414.6625012565. The cubic root of 19489245 is about 269.1111373574. Note that the first 4 decimals are identical.

The spelling of 19489245 in words is "nineteen million, four hundred eighty-nine thousand, two hundred forty-five".