209011612 has 12 divisors (see below), whose sum is σ = 367383240. Its totient is φ = 104044976.

The previous prime is 209011601. The next prime is 209011619. The reversal of 209011612 is 216110902.

209011612 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209011619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114187 + ... + 116002.

It is an arithmetic number, because the mean of its divisors is an integer number (30615270).

Almost surely, 2^209011612 is an apocalyptic number.

It is an amenable number.

209011612 is a deficient number, since it is larger than the sum of its proper divisors (158371628).

209011612 is a wasteful number, since it uses less digits than its factorization.

209011612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230420 (or 230418 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 209011612 is about 14457.2338986405. The cubic root of 209011612 is about 593.4582044410.

The spelling of 209011612 in words is "two hundred nine million, eleven thousand, six hundred twelve".