19421486 has 16 divisors (see below), whose sum is σ = 33423360. Its totient is φ = 8291160.

The previous prime is 19421483. The next prime is 19421489. The reversal of 19421486 is 68412491.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (19421483) and next prime (19421489).

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19421483) 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, 1235 + ... + 6353.

It is an arithmetic number, because the mean of its divisors is an integer number (2088960).

Almost surely, 2^19421486 is an apocalyptic number.

19421486 is a deficient number, since it is larger than the sum of its proper divisors (14001874).

19421486 is a wasteful number, since it uses less digits than its factorization.

19421486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5399.

The product of its digits is 13824, while the sum is 35.

The square root of 19421486 is about 4406.9815066551. The cubic root of 19421486 is about 268.7988989084.

The spelling of 19421486 in words is "nineteen million, four hundred twenty-one thousand, four hundred eighty-six".