164168149 has 16 divisors (see below), whose sum is σ = 172915200. Its totient is φ = 155697984.

The previous prime is 164168119. The next prime is 164168153. The reversal of 164168149 is 941861461.

It is a cyclic number.

It is not a de Polignac number, because 164168149 - 2¹⁷ = 164037077 is a prime.

It is a super-2 number, since 2×164168149² = 53902362292172402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164168119) 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, 342492 + ... + 342970.

It is an arithmetic number, because the mean of its divisors is an integer number (10807200).

Almost surely, 2^164168149 is an apocalyptic number.

It is an amenable number.

164168149 is a deficient number, since it is larger than the sum of its proper divisors (8747051).

164168149 is a wasteful number, since it uses less digits than its factorization.

164168149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732.

The product of its digits is 41472, while the sum is 40.

The square root of 164168149 is about 12812.8119083986. The cubic root of 164168149 is about 547.5573763045.

The spelling of 164168149 in words is "one hundred sixty-four million, one hundred sixty-eight thousand, one hundred forty-nine".