209393190 has 48 divisors (see below), whose sum is σ = 546245856. Its totient is φ = 55651200.

The previous prime is 209393153. The next prime is 209393201. The reversal of 209393190 is 91393902.

209393190 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×209393190² = 87691016036752200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24250 + ... + 31730.

It is an arithmetic number, because the mean of its divisors is an integer number (11380122).

Almost surely, 2^209393190 is an apocalyptic number.

209393190 is an abundant number, since it is smaller than the sum of its proper divisors (336852666).

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

209393190 is a wasteful number, since it uses less digits than its factorization.

209393190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7805 (or 7802 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 36.

The square root of 209393190 is about 14470.4246655031. The cubic root of 209393190 is about 593.8191300488.

The spelling of 209393190 in words is "two hundred nine million, three hundred ninety-three thousand, one hundred ninety".