19689485 has 16 divisors (see below), whose sum is σ = 25603776. Its totient is φ = 14477568.

The previous prime is 19689479. The next prime is 19689493. The reversal of 19689485 is 58498691.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 19689485 - 2²⁴ = 2912269 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 962 + ... + 6348.

It is an arithmetic number, because the mean of its divisors is an integer number (1600236).

Almost surely, 2^19689485 is an apocalyptic number.

It is an amenable number.

19689485 is a deficient number, since it is larger than the sum of its proper divisors (5914291).

19689485 is a wasteful number, since it uses less digits than its factorization.

19689485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5452.

The product of its digits is 622080, while the sum is 50.

The square root of 19689485 is about 4437.2835158462. The cubic root of 19689485 is about 270.0296492360.

The spelling of 19689485 in words is "nineteen million, six hundred eighty-nine thousand, four hundred eighty-five".