19485487 has 8 divisors (see below), whose sum is σ = 22724000. Its totient is φ = 16701552.

The previous prime is 19485481. The next prime is 19485497. The reversal of 19485487 is 78458491.

It is not a de Polignac number, because 19485487 - 2⁷ = 19485359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19485481) 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, 28062 + ... + 28747.

It is an arithmetic number, because the mean of its divisors is an integer number (2840500).

Almost surely, 2^19485487 is an apocalyptic number.

19485487 is a deficient number, since it is larger than the sum of its proper divisors (3238513).

19485487 is an frugal number, since it uses more digits than its factorization.

19485487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56830 (or 56816 counting only the distinct ones).

The product of its digits is 322560, while the sum is 46.

The square root of 19485487 is about 4414.2368536362. The cubic root of 19485487 is about 269.0938391901.

The spelling of 19485487 in words is "nineteen million, four hundred eighty-five thousand, four hundred eighty-seven".