211145164 has 12 divisors (see below), whose sum is σ = 369639088. Its totient is φ = 105534000.

The previous prime is 211145153. The next prime is 211145173. The reversal of 211145164 is 461541112.

211145164 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5209 + ... + 21199.

Almost surely, 2^211145164 is an apocalyptic number.

It is an amenable number.

211145164 is a deficient number, since it is larger than the sum of its proper divisors (158493924).

211145164 is a wasteful number, since it uses less digits than its factorization.

211145164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19296 (or 19294 counting only the distinct ones).

The product of its digits is 960, while the sum is 25.

The square root of 211145164 is about 14530.8349381582. The cubic root of 211145164 is about 595.4706762270.

Adding to 211145164 its reverse (461541112), we get a palindrome (672686276).

The spelling of 211145164 in words is "two hundred eleven million, one hundred forty-five thousand, one hundred sixty-four".