19484919 has 6 divisors (see below), whose sum is σ = 28144896. Its totient is φ = 12989940.

The previous prime is 19484917. The next prime is 19484939. The reversal of 19484919 is 91948491.

It is not a de Polignac number, because 19484919 - 2¹ = 19484917 is a prime.

It is a super-2 number, since 2×19484919² = 759324136873122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19484917) 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 5 ways as a sum of consecutive naturals, for example, 1082487 + ... + 1082504.

It is an arithmetic number, because the mean of its divisors is an integer number (4690816).

Almost surely, 2^19484919 is an apocalyptic number.

19484919 is a deficient number, since it is larger than the sum of its proper divisors (8659977).

19484919 is a wasteful number, since it uses less digits than its factorization.

19484919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2164997 (or 2164994 counting only the distinct ones).

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

The square root of 19484919 is about 4414.1725158856. The cubic root of 19484919 is about 269.0912244785.

The spelling of 19484919 in words is "nineteen million, four hundred eighty-four thousand, nine hundred nineteen".