18929469 has 8 divisors (see below), whose sum is σ = 27180832. Its totient is φ = 11648880.

The previous prime is 18929447. The next prime is 18929473. The reversal of 18929469 is 96492981.

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

It is not a de Polignac number, because 18929469 - 2⁷ = 18929341 is a prime.

It is a super-2 number, since 2×18929469² = 716649593243922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18929419) 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, 242647 + ... + 242724.

It is an arithmetic number, because the mean of its divisors is an integer number (3397604).

Almost surely, 2^18929469 is an apocalyptic number.

It is an amenable number.

18929469 is a deficient number, since it is larger than the sum of its proper divisors (8251363).

18929469 is a wasteful number, since it uses less digits than its factorization.

18929469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485387.

The product of its digits is 279936, while the sum is 48.

The square root of 18929469 is about 4350.8009607427. The cubic root of 18929469 is about 266.5095711872.

The spelling of 18929469 in words is "eighteen million, nine hundred twenty-nine thousand, four hundred sixty-nine".