209130926 has 12 divisors (see below), whose sum is σ = 318192216. Its totient is φ = 103087740.

The previous prime is 209130917. The next prime is 209130937. The reversal of 209130926 is 629031902.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 209130892 and 209130901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 290 + ... + 20453.

It is an arithmetic number, because the mean of its divisors is an integer number (26516018).

Almost surely, 2^209130926 is an apocalyptic number.

209130926 is a deficient number, since it is larger than the sum of its proper divisors (109061290).

209130926 is an equidigital number, since it uses as much as digits as its factorization.

209130926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20887 (or 20816 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 209130926 is about 14461.3597562608. The cubic root of 209130926 is about 593.5711079017.

The spelling of 209130926 in words is "two hundred nine million, one hundred thirty thousand, nine hundred twenty-six".