164866911 has 16 divisors (see below), whose sum is σ = 240094848. Its totient is φ = 99799200.

The previous prime is 164866903. The next prime is 164866913. The reversal of 164866911 is 119668461.

It is not a de Polignac number, because 164866911 - 2³ = 164866903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164866913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30396 + ... + 35406.

It is an arithmetic number, because the mean of its divisors is an integer number (15005928).

Almost surely, 2^164866911 is an apocalyptic number.

164866911 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

164866911 is a deficient number, since it is larger than the sum of its proper divisors (75227937).

164866911 is a wasteful number, since it uses less digits than its factorization.

164866911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6022.

The product of its digits is 62208, while the sum is 42.

The square root of 164866911 is about 12840.0510513004. The cubic root of 164866911 is about 548.3331474107. Note that the first 3 decimals are identical.

The spelling of 164866911 in words is "one hundred sixty-four million, eight hundred sixty-six thousand, nine hundred eleven".