19730489 has 8 divisors (see below), whose sum is σ = 20943360. Its totient is φ = 18523456.

The previous prime is 19730483. The next prime is 19730497. The reversal of 19730489 is 98403791.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19730489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19730483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6932 + ... + 9354.

It is an arithmetic number, because the mean of its divisors is an integer number (2617920).

Almost surely, 2^19730489 is an apocalyptic number.

It is an amenable number.

19730489 is a deficient number, since it is larger than the sum of its proper divisors (1212871).

19730489 is a wasteful number, since it uses less digits than its factorization.

19730489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2919.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 19730489 is about 4441.9015072376. The cubic root of 19730489 is about 270.2169678053.

The spelling of 19730489 in words is "nineteen million, seven hundred thirty thousand, four hundred eighty-nine".