19489065 has 16 divisors (see below), whose sum is σ = 31344000. Its totient is φ = 10340352.

The previous prime is 19489031. The next prime is 19489069. The reversal of 19489065 is 56098491.

It is not a de Polignac number, because 19489065 - 2⁸ = 19488809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19489069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 280 + ... + 6249.

It is an arithmetic number, because the mean of its divisors is an integer number (1959000).

Almost surely, 2^19489065 is an apocalyptic number.

19489065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19489065 is a deficient number, since it is larger than the sum of its proper divisors (11854935).

19489065 is a wasteful number, since it uses less digits than its factorization.

19489065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6736.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 19489065 is about 4414.6421146000. The cubic root of 19489065 is about 269.1103088636.

The spelling of 19489065 in words is "nineteen million, four hundred eighty-nine thousand, sixty-five".