164501111 has 2 divisors, whose sum is σ = 164501112. Its totient is φ = 164501110.

The previous prime is 164501093. The next prime is 164501131. The reversal of 164501111 is 111105461.

It is a happy number.

It is an a-pointer prime, because the next prime (164501131) can be obtained adding 164501111 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 164501111 - 2²⁶ = 97392247 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164501131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82250555 + 82250556.

It is an arithmetic number, because the mean of its divisors is an integer number (82250556).

Almost surely, 2^164501111 is an apocalyptic number.

164501111 is a deficient number, since it is larger than the sum of its proper divisors (1).

164501111 is an equidigital number, since it uses as much as digits as its factorization.

164501111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 20.

The square root of 164501111 is about 12825.7986495968. The cubic root of 164501111 is about 547.9273073431.

Adding to 164501111 its reverse (111105461), we get a palindrome (275606572).

The spelling of 164501111 in words is "one hundred sixty-four million, five hundred one thousand, one hundred eleven".