19549434 has 16 divisors (see below), whose sum is σ = 40008672. Its totient is φ = 6364848.

The previous prime is 19549429. The next prime is 19549441. The reversal of 19549434 is 43494591.

It is a junction number, because it is equal to n+sod(n) for n = 19549392 and 19549401.

It is an unprimeable number.

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, 37629 + ... + 38144.

It is an arithmetic number, because the mean of its divisors is an integer number (2500542).

Almost surely, 2^19549434 is an apocalyptic number.

19549434 is an abundant number, since it is smaller than the sum of its proper divisors (20459238).

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

19549434 is a wasteful number, since it uses less digits than its factorization.

19549434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75821.

The product of its digits is 77760, while the sum is 39.

The square root of 19549434 is about 4421.4741885484. The cubic root of 19549434 is about 269.3878863099.

The spelling of 19549434 in words is "nineteen million, five hundred forty-nine thousand, four hundred thirty-four".