209158830 has 24 divisors (see below), whose sum is σ = 543813192. Its totient is φ = 55775664.

The previous prime is 209158823. The next prime is 209158843. The reversal of 209158830 is 38851902.

209158830 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1161904 + ... + 1162083.

It is an arithmetic number, because the mean of its divisors is an integer number (22658883).

Almost surely, 2^209158830 is an apocalyptic number.

209158830 is an abundant number, since it is smaller than the sum of its proper divisors (334654362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

209158830 is a wasteful number, since it uses less digits than its factorization.

209158830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2324000 (or 2323997 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 209158830 is about 14462.3245019603. The cubic root of 209158830 is about 593.5975064708.

The spelling of 209158830 in words is "two hundred nine million, one hundred fifty-eight thousand, eight hundred thirty".