19929133 has 6 divisors (see below), whose sum is σ = 23182926. Its totient is φ = 17082072.

The previous prime is 19929121. The next prime is 19929137. The reversal of 19929133 is 33192991.

It can be written as a sum of positive squares in only one way, i.e., 19695844 + 233289 = 4438^2 + 483^2 .

It is not a de Polignac number, because 19929133 - 2⁹ = 19928621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19929092 and 19929101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19929137) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 203310 + ... + 203407.

It is an arithmetic number, because the mean of its divisors is an integer number (3863821).

Almost surely, 2^19929133 is an apocalyptic number.

It is an amenable number.

19929133 is a deficient number, since it is larger than the sum of its proper divisors (3253793).

19929133 is an equidigital number, since it uses as much as digits as its factorization.

19929133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406731 (or 406724 counting only the distinct ones).

The product of its digits is 13122, while the sum is 37.

The square root of 19929133 is about 4464.2057524267. The cubic root of 19929133 is about 271.1207778524.

The spelling of 19929133 in words is "nineteen million, nine hundred twenty-nine thousand, one hundred thirty-three".