19468749 has 8 divisors (see below), whose sum is σ = 27324640. Its totient is φ = 12296016.

The previous prime is 19468739. The next prime is 19468769. The reversal of 19468749 is 94786491.

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

It is not a de Polignac number, because 19468749 - 2⁴ = 19468733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19468698 and 19468707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19468739) 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 7 ways as a sum of consecutive naturals, for example, 170722 + ... + 170835.

It is an arithmetic number, because the mean of its divisors is an integer number (3415580).

Almost surely, 2^19468749 is an apocalyptic number.

19468749 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

19468749 is a deficient number, since it is larger than the sum of its proper divisors (7855891).

19468749 is a wasteful number, since it uses less digits than its factorization.

19468749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341579.

The product of its digits is 435456, while the sum is 48.

The square root of 19468749 is about 4412.3405353622. The cubic root of 19468749 is about 269.0167667350.

The spelling of 19468749 in words is "nineteen million, four hundred sixty-eight thousand, seven hundred forty-nine".