164649111 has 32 divisors (see below), whose sum is σ = 254679552. Its totient is φ = 93624960.

The previous prime is 164649109. The next prime is 164649113. The reversal of 164649111 is 111946461.

It is an interprime number because it is at equal distance from previous prime (164649109) and next prime (164649113).

It is not a de Polignac number, because 164649111 - 2¹ = 164649109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164649113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38181 + ... + 42273.

It is an arithmetic number, because the mean of its divisors is an integer number (7958736).

Almost surely, 2^164649111 is an apocalyptic number.

164649111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

164649111 is a deficient number, since it is larger than the sum of its proper divisors (90030441).

164649111 is a wasteful number, since it uses less digits than its factorization.

164649111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4183.

The product of its digits is 5184, while the sum is 33.

The square root of 164649111 is about 12831.5669736786. The cubic root of 164649111 is about 548.0915796563.

The spelling of 164649111 in words is "one hundred sixty-four million, six hundred forty-nine thousand, one hundred eleven".